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AMPEL360 is a program-native extended platform delivering a Full Digital Information Twin Architecture to support EU Clean Aviation and Net-Zero objectives, integrating knowledge, product, and data GENESIS with end-to-end lifecycle management and a governed transition from exploration to execution.

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AmedeoPelliccia/AMPEL360-Q100

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AMPEL360 Q100 (AMPEL360-AIR-T)

Hydrogen-Hybrid Electric BWB Aircraft β€” Digital Engineering Baseline

License Status ATA Chapters Framework S1000D Teknia Tokens KI-DM

Full Digital Information Twin Architecture for Clean Aviation Programmes
From GENESIS uncertainty discovery to contract-ready execution


Table of Contents

  1. Executive Summary
  2. Conceptual Architecture
  3. Repository Organization
  4. OPT-IN Framework
  5. Governance & Workflows
  6. Standards & Compliance
  7. Getting Started
  8. CAOS Framework
  9. Publishing Model
  10. Tooling & Automation
  11. Security & Access Control
  12. Key Documentation
  13. Contributing
  14. Glossary
  15. Changelog
  16. License & Acknowledgments

1. Executive Summary

Mission Statement

AMPEL360 Q100 delivers a certification-grade digital information architecture for hydrogen-electric aviation, where knowledge and information are governed as distinct domains with explicit transformation contracts.

This repository contains synthetic but structurally realistic program data demonstrating the Knowledge and Information Data Model (KI-DM) applied to a next-generation ~100 passenger regional aircraft concept.

The Aircraft Concept

Technology Description
Blended Wing Body (BWB) High aerodynamic efficiency and integrated volume
Hβ‚‚ PEM Fuel Cells Primary electrical power generation from hydrogen
Distributed / Open-Fan Propulsors Distributed propulsion architecture for efficiency and noise reduction
Peak-Power Buffering Buffer strategy for transients (energy management and load leveling)
Circularity + DPP Digital Product Passport foundations for lifecycle traceability

Why This Matters

Principle Implementation
Knowledge β‰  Information Engineering truth (KDB) is separated from consumable publications (IDB)
Uncertainty is First-Class Every unknown is tracked, planned, and closed with full traceability
Automation Without Delegation ASIT agents execute contracts; humans retain technical authority
Incentive Alignment Teknia Tokens reward uncertainty reduction, not just output volume
Certification-Grade Governance Explicit contracts, auditable transformations, traceable evidence

At a Glance

Metric Value
ATA Chapters 79
Lifecycle Phases 14 (LC01–LC14)
Framework Axes 5 (O-P-T-I-N)
Publication Standard S1000D
Token System TT v3.14
Knowledge Domains PLM (Product) + SLM (Service)

Core Principle

Technical authority remains human and explicit; automation remains bounded, deterministic, and auditable. β€œThis repository demonstrates governance and transformation mechanics, not aircraft certification data.”

Explicit Non-Goals

  • This repository does not replace engineering authority
  • It does not assert airworthiness or certification compliance
  • It does not automate decision-making

2. Conceptual Architecture

2.1 The Knowledge-Information Separation Principle

This repository addresses a recurring industry challenge:

Engineering knowledge, documentation, and certification evidence tend to diverge as programs scale and become geographically distributed.

The KI-DM (Knowledge and Information Data Model) solves this by treating knowledge and information as fundamentally distinct domains:

Domain Purpose Authority
Knowledge (KDB) What we know, what we don't know yet, and under whose authority Engineering teams, domain experts
Information (IDB) What is needed, by whom, to execute a specific process Publication authors, operators, MROs
Transformation (ASIT) How validated knowledge becomes usable information Automated but governed by explicit contracts

Key insight: Information is always derived from knowledgeβ€”it never creates new knowledge. This separation ensures that:

  • Engineering truth remains authoritative and traceable
  • Publications can be regenerated from source knowledge
  • Changes propagate through governed channels
  • Auditors can inspect the complete chain from uncertainty to evidence

2.2 GENESIS β†’ KDB β†’ IDB Flow

The complete information pipeline flows through three major layers:

β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”
β”‚                              GENESIS                                         β”‚
β”‚            "What we don't know yet, and how we'll find out"                  β”‚
β”œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€
β”‚                                                                              β”‚
β”‚  β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”    β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”    β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”                      β”‚
β”‚  β”‚   O-KNOT    │───▢│   Y-KNOT    │───▢│    KNOT     β”‚                      β”‚
β”‚  β”‚   Origin    β”‚    β”‚ Justificationβ”‚    β”‚   Framed    β”‚                      β”‚
β”‚  β”‚ Uncertainty β”‚    β”‚   Trees     β”‚    β”‚ Uncertainty β”‚                      β”‚
β”‚  β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜    β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜    β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜                      β”‚
β”‚                                                                              β”‚
β”‚  β€’ Ontology & schemas (structure, no data)                                   β”‚
β”‚  β€’ Programmatic logic & policy alignment                                     β”‚
β”‚  β€’ Decision rationale capture                                                β”‚
β”‚                                                                              β”‚
β”œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€
β”‚                       β–Ό ALLOCATION GATE β–Ό                                    β”‚
β”‚                    "Reality Big Bang"                                        β”‚
β”‚                                                                              β”‚
β”‚  β€’ Contractual, timestampable commitment                                     β”‚
β”‚  β€’ Funding / responsibility / scope bound                                    β”‚
β”‚  β€’ Irreversible transition to accountable reality                            β”‚
β”œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€
β”‚                                KDB                                           β”‚
β”‚              "What we know, under whose authority"                           β”‚
β”œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€
β”‚                                                                              β”‚
β”‚  β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”    β”‚
β”‚  β”‚  SSOT / PLM β€” Product Lifecycle Management (LC01–LC10)              β”‚    β”‚
β”‚  β”œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€    β”‚
β”‚  β”‚  LC01  Problem Statement & Uncertainty Orchestration                β”‚    β”‚
β”‚  β”‚  LC02  System Requirements                                          β”‚    β”‚
β”‚  β”‚  LC03  Safety & Reliability                                         β”‚    β”‚
β”‚  β”‚  LC04  Design Definition (DMU)                                      β”‚    β”‚
β”‚  β”‚  LC05  Analysis Models (CAE)                                        β”‚    β”‚
β”‚  β”‚  LC06  Integration & Test (PMU)                                     β”‚    β”‚
β”‚  β”‚  LC07  Quality                                                      β”‚    β”‚
β”‚  β”‚  LC08  Flight Test & Certification                                  β”‚    β”‚
β”‚  β”‚  LC09  Green Aircraft Baselines                                     β”‚    β”‚
β”‚  β”‚  LC10  Industrialization & Production (CAM)                         β”‚    β”‚
β”‚  β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜    β”‚
β”‚                                                                              β”‚
β”‚  β€’ Lifecycle baselines                    β€’ Deterministic reasoning          β”‚
β”‚  β€’ Requirements & ICDs                    β€’ Safety & certification evidence  β”‚
β”‚  β€’ Design models                          β€’ V&V artifacts                    β”‚
β”‚                                                                              β”‚
β”œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€
β”‚                       β–Ό ASIT CONTRACTS β–Ό                                     β”‚
β”‚          (Deterministic, traceable, auditable transformation)                β”‚
β”‚                                                                              β”‚
β”‚  β€’ KITDM-CTR-001: KDB β†’ CSDB                                                β”‚
β”‚  β€’ KITDM-CTR-002: KDB β†’ EXPORT                                              β”‚
β”‚  β€’ KITDM-CTR-003: KDB β†’ IETP                                                β”‚
β”œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€
β”‚                                IDB                                           β”‚
β”‚        "What information is needed, by whom, for what process"               β”‚
β”œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€
β”‚                                                                              β”‚
β”‚  β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”    β”‚
β”‚  β”‚  SSOT / SLM β€” Service Lifecycle Management (LC11–LC14)              β”‚    β”‚
β”‚  β”œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€    β”‚
β”‚  β”‚  LC11  Operations & Customization                                   β”‚    β”‚
β”‚  β”‚  LC12  Support Services                                             β”‚    β”‚
β”‚  β”‚  LC13  MRO & Sustainment                                            β”‚    β”‚
β”‚  β”‚  LC14  Retirement & Circularity                                     β”‚    β”‚
β”‚  β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜    β”‚
β”‚                                                                              β”‚
β”‚  β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”    β”‚
β”‚  β”‚  PUB β€” Publications                                                 β”‚    β”‚
β”‚  β”œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€    β”‚
β”‚  β”‚  CSDB   S1000D data modules (DM/PM/DML/BREX/ICN)                   β”‚    β”‚
β”‚  β”‚  EXPORT Rendered deliverables (PDF/HTML)                            β”‚    β”‚
β”‚  β”‚  IETP   Interactive runtime delivery                                β”‚    β”‚
β”‚  β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜    β”‚
β”‚                                                                              β”‚
β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜

2.3 ASIT: Bounded Automation

ASIT (Aircraft Standard Information Transponder) agents execute formal transformation contracts between KDB and IDB. Critical constraints:

ASIT Does ASIT Does Not
Execute deterministic transformations Create knowledge
Apply validation rules (BREX, schemas) Make engineering decisions
Generate trace matrices Assume technical authority
Log all operations with full provenance Modify source knowledge
Report validation failures Interpret ambiguous inputs

Every ASIT transformation is:

  • Deterministic β€” Same input always produces same output
  • Reproducible β€” Can be re-executed at any time
  • Traceable β€” Full audit trail from source to output
  • Governed β€” Controlled by explicit contract definition

2.4 PLM vs SLM Lifecycle Domains

The 14 lifecycle phases are split across two management domains:

β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”
β”‚                    PLM β€” Product Lifecycle Management                        β”‚
β”‚                         (KDB / SSOT Authority)                               β”‚
β”œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€
β”‚  LC01  β”‚ Problem Statement      β”‚ Uncertainty orchestration, KNOT/KNU       β”‚
β”‚  LC02  β”‚ System Requirements    β”‚ Requirements, traceability                β”‚
β”‚  LC03  β”‚ Safety & Reliability   β”‚ Hazard analysis, FMEA, safety cases       β”‚
β”‚  LC04  β”‚ Design Definition      β”‚ DMU, ICDs, architecture                   β”‚
β”‚  LC05  β”‚ Analysis Models        β”‚ FEA, CFD, thermal, performance            β”‚
β”‚  LC06  β”‚ Integration & Test     β”‚ PMU, test procedures, evidence            β”‚
β”‚  LC07  β”‚ Quality                β”‚ Quality plans, inspection records         β”‚
β”‚  LC08  β”‚ Flight Test & Cert     β”‚ Certification basis, compliance matrix    β”‚
β”‚  LC09  β”‚ Green Aircraft         β”‚ Delivery baselines, effectivity           β”‚
β”‚  LC10  β”‚ Industrialization      β”‚ Manufacturing specs, tooling, CAM         β”‚
β”œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€
β”‚                    SLM β€” Service Lifecycle Management                        β”‚
β”‚                         (IDB / SSOT Authority)                               β”‚
β”œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€
β”‚  LC11  β”‚ Operations             β”‚ Ops configurations, customer deltas       β”‚
β”‚  LC12  β”‚ Support Services       β”‚ In-service support, technical bulletins   β”‚
β”‚  LC13  β”‚ MRO & Sustainment      β”‚ Maintenance programs, repair authority    β”‚
β”‚  LC14  β”‚ Retirement             β”‚ End-of-life, circularity, DPP closure     β”‚
β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜

Why this separation matters:

  • PLM = Product knowledge owned by design/engineering authority
  • SLM = Service knowledge owned by operations/MRO authority
  • Clear handoff = LC09 (Green Aircraft) marks the transition point
  • Both are SSOT = Different authorities, same governance rigor

3. Repository Organization

3.1 Top-Level Structure

AMPEL360-AIR-T/
β”œβ”€β”€ README.md                          # This file
β”œβ”€β”€ LICENSE                            # CC0 1.0 Universal
β”œβ”€β”€ CHANGELOG.md                       # Version history
β”œβ”€β”€ requirements.txt                   # Python dependencies
β”‚
β”œβ”€β”€ OPT-IN_FRAMEWORK/                  # Main content organized by ATA chapters
β”‚   β”œβ”€β”€ O-ORGANIZATIONS/               # ATA 00–05
β”‚   β”œβ”€β”€ P-PROGRAMS/                    # ATA 06–12
β”‚   β”œβ”€β”€ T-TECHNOLOGIES_.../            # ATA 20–80 (on-board systems)
β”‚   β”œβ”€β”€ I-INFRASTRUCTURES/             # Ground support, Hβ‚‚ logistics
β”‚   └── N-NEURAL_NETWORKS/             # Governance, ledger, AI/ML
β”‚
β”œβ”€β”€ CAOS/                              # Continuous Airworthiness framework
β”‚   β”œβ”€β”€ CAOS_INDEX.md
β”‚   β”œβ”€β”€ CAOS_ARCHITECTURE.md
β”‚   └── CAOS_OPERATIONS_FRAMEWORK.md
β”‚
β”œβ”€β”€ tools/                             # CLI tools and automation
β”‚   β”œβ”€β”€ ci/                            # CI/CD scripts
β”‚   β”œβ”€β”€ tek_tokens.py                  # Tokenomics CLI
β”‚   └── knu_distribution.py            # KNOT closure distribution
β”‚
β”œβ”€β”€ finance/                           # Token ledger
β”‚   └── ledger.json                    # SHA-256 hash chain
β”‚
β”œβ”€β”€ docs/                              # Additional documentation
β”‚   β”œβ”€β”€ ONTOLOGY_GENESIS_KNOWLEDGE_MODEL.md
β”‚   β”œβ”€β”€ OPT-IN_FRAMEWORK_STANDARD.md
β”‚   β”œβ”€β”€ AMPEL360_DOCUMENTATION_STANDARD.md
β”‚   β”œβ”€β”€ AI-ASI-TP.md
β”‚   └── DIGITAL_TWIN_CONTROL_LOOP.md
β”‚
└── .github/                           # GitHub configuration
    β”œβ”€β”€ hooks/
    └── workflows/

ATA-XX Canonical Schema β€” Fully Annotated

Version: 2.1.0
Status: Normative
Last Updated: 2026-01-21


ATA_XX-<SYSTEM_NAME>/                                    # Root folder for ATA chapter (e.g., ATA_28-FUEL)
β”œβ”€β”€ README.md                                            # System overview: mission, scope, navigation, contacts
β”œβ”€β”€ NAMING_CONVENTIONS.md                                # ID grammar rules, controlled vocabulary, slug formats
β”œβ”€β”€ TRACEABILITY_CONVENTIONS.md                          # Relationship types, trace link semantics, directionality
β”œβ”€β”€ GOVERNANCE_POLICY.md                                 # Default baseline policy, change authority, approval gates
β”‚
β”œβ”€β”€ WBS/                                                 # Work Breakdown Structure β€” project/program decomposition
β”‚   β”œβ”€β”€ SYSTEM_MISSION.md                                # Why this system exists (strategic purpose)
β”‚   β”œβ”€β”€ SYSTEM_VISION.md                                 # Target end-state and success criteria
β”‚   β”œβ”€β”€ SYSTEM_OBJECTIVES.md                             # Measurable goals derived from mission/vision
β”‚   β”œβ”€β”€ WBS_LEVEL_1.yaml                                 # Top-level work packages (major deliverables)
β”‚   β”œβ”€β”€ WBS_LEVEL_2.yaml                                 # Second-level decomposition (sub-deliverables)
β”‚   β”œβ”€β”€ WBS_TRACE_TO_PROJECT.csv                         # Maps WBS elements to project schedule/milestones
β”‚   └── WBS_BUDGET_TT.yaml                               # Token budget allocation per WBS element (informational)
β”‚
β”œβ”€β”€ GOVERNANCE/                                          # System-level governance β€” DEFAULT authority for all subjects
β”‚   β”œβ”€β”€ README.md                                        # Governance overview, roles, escalation paths
β”‚   β”œβ”€β”€ BASELINES.md                                     # Baseline types (FBL, DBL, PBL) and scope definitions
β”‚   β”œβ”€β”€ BASELINE_REGISTER.csv                            # Log of established baselines with dates and approvers
β”‚   β”œβ”€β”€ CHANGE_LOG.md                                    # Chronological record of governance changes
β”‚   β”œβ”€β”€ CHANGE_CONTROL/                                  # Engineering change management artifacts
β”‚   β”‚   β”œβ”€β”€ README.md                                    # Change control process description and workflow
β”‚   β”‚   β”œβ”€β”€ ECR_TEMPLATE.md                              # Engineering Change Request template (propose change)
β”‚   β”‚   β”œβ”€β”€ ECO_TEMPLATE.md                              # Engineering Change Order template (implement change)
β”‚   β”‚   β”œβ”€β”€ ECR/                                         # Container for all ECR instances
β”‚   β”‚   β”‚   β”œβ”€β”€ ECR_REGISTER.csv                         # Index of all ECRs with status tracking
β”‚   β”‚   β”‚   └── ECR-<ID>.md                              # Individual ECR document (one per change request)
β”‚   β”‚   β”œβ”€β”€ ECO/                                         # Container for all ECO instances
β”‚   β”‚   β”‚   β”œβ”€β”€ ECO_REGISTER.csv                         # Index of all ECOs with implementation status
β”‚   β”‚   β”‚   └── ECO-<ID>.md                              # Individual ECO document (one per approved change)
β”‚   β”‚   └── CCB_MINUTES/                                 # Configuration Control Board meeting records
β”‚   β”‚       └── CCB-YYYY-MM-DD.md                        # Minutes from specific CCB meeting (dated)
β”‚   β”œβ”€β”€ APPROVALS/                                       # Formal approval artifacts and authority matrix
β”‚   β”‚   β”œβ”€β”€ APPROVAL_MATRIX.csv                          # Who approves what (artifact type Γ— role Γ— gate)
β”‚   β”‚   └── GATE_REVIEWS/                                # Formal review gate documentation
β”‚   β”‚       β”œβ”€β”€ PDR_APPROVAL.md                          # Preliminary Design Review approval record
β”‚   β”‚       β”œβ”€β”€ CDR_APPROVAL.md                          # Critical Design Review approval record
β”‚   β”‚       β”œβ”€β”€ TRR_APPROVAL.md                          # Test Readiness Review approval record
β”‚   β”‚       └── FRR_APPROVAL.md                          # Flight Readiness Review approval record
β”‚   β”œβ”€β”€ RELEASES/                                        # Release management and versioning
β”‚   β”‚   β”œβ”€β”€ RELEASE_POLICY.md                            # Versioning scheme, release criteria, rollback rules
β”‚   β”‚   β”œβ”€β”€ RELEASE_REGISTER.csv                         # Log of all releases with version/date/scope
β”‚   β”‚   └── RELEASE_NOTES/                               # Per-release documentation
β”‚   β”‚       └── RELEASE_vX-Y-Z.md                        # Release notes for specific version (semver)
β”‚   └── INCENTIVES/                                      # Token economics and contributor rewards (informational)
β”‚       β”œβ”€β”€ README.md                                    # Incentive program overview and eligibility
β”‚       β”œβ”€β”€ TT_ALLOCATION.yaml                           # Token pools per KNOT/activity type
β”‚       β”œβ”€β”€ TT_DISTRIBUTION.csv                          # Historical distribution ledger
β”‚       └── TT_POLICY.md                                 # Rules for earning, vesting, and redemption
β”‚
β”œβ”€β”€ INDEX/                                               # System-wide navigation and traceability indexes
β”‚   β”œβ”€β”€ README.md                                        # How to use the index, regeneration instructions
β”‚   β”œβ”€β”€ SSOT_INDEX.yaml                                  # Registry of all authoritative source locations
β”‚   β”œβ”€β”€ TRACE_MASTER.csv                                 # Cross-subject traceability matrix (end-to-end)
β”‚   β”œβ”€β”€ ID_REGISTRY.csv                                  # Auto-generated catalog of all IDs in the system
β”‚   β”œβ”€β”€ ARTIFACT_CATALOG.yaml                            # Inventory of all artifacts with metadata
β”‚   └── NAVIGATION_MAP.html                              # Visual/interactive navigation aid (generated)
β”‚
└── XX-YY-<section-slug>/                                # ATA section folder (e.g., 28-10-storage)
    β”œβ”€β”€ README.md                                        # Section scope, boundaries, Area of Responsibility
    β”œβ”€β”€ SECTION_INDEX.yaml                               # Section-level artifact index and metrics
    β”‚
    β”œβ”€β”€ GENESIS/                                         # Uncertainty discovery layer (section-level ONLY)
    β”‚   β”œβ”€β”€ README.md                                    # GENESIS purpose, O-KNOT vs Y-KNOT definitions
    β”‚   β”œβ”€β”€ O-KNOTS.csv                                  # Origin KNOTs: inherited/experience-gap uncertainties
    β”‚   β”œβ”€β”€ Y-KNOTS.csv                                  # Derived KNOTs: regulatory/requirement-driven unknowns
    β”‚   β”œβ”€β”€ DISCOVERY_LOG.md                             # Chronological narrative of uncertainty identification
    β”‚   └── GRADUATION_CRITERIA.md                       # Rules for promoting GENESIS items to subject KNOTs
    β”‚
    └── XX-YY-ZZ-<subject-slug>/                         # Subject folder (e.g., 28-10-00-fuel-storage-general)
        β”œβ”€β”€ README.md                                    # Subject overview, contract pointers, quick links
        β”œβ”€β”€ SUBJECT_MANIFEST.yaml                        # Inventory snapshot: artifact counts, status summary
        β”‚
        β”œβ”€β”€ GOVERNANCE/                                  # Subject-level overrides (optional, inherits system)
        β”‚   β”œβ”€β”€ README.md                                # Override scope and inheritance from system policy
        β”‚   β”œβ”€β”€ BASELINES.md                             # Subject-specific baseline definitions (if different)
        β”‚   β”œβ”€β”€ BASELINE_REGISTER.csv                    # Subject baseline log (if managed separately)
        β”‚   β”œβ”€β”€ CHANGE_LOG.md                            # Subject-specific change history
        β”‚   β”œβ”€β”€ CHANGE_CONTROL/                          # Subject ECR/ECO if delegated authority
        β”‚   β”‚   β”œβ”€β”€ ECR/                                 # Subject-scoped Engineering Change Requests
        β”‚   β”‚   β”œβ”€β”€ ECO/                                 # Subject-scoped Engineering Change Orders
        β”‚   β”‚   └── CCB_MINUTES/                         # Subject CCB records (if separate board)
        β”‚   β”œβ”€β”€ APPROVALS/                               # Subject approval artifacts
        β”‚   β”‚   β”œβ”€β”€ APPROVAL_MATRIX.csv                  # Subject-specific approval authorities
        β”‚   β”‚   └── GATE_REVIEWS/                        # Subject gate review records
        β”‚   └── RELEASES/                                # Subject release management
        β”‚       └── RELEASE_REGISTER.csv                 # Subject release log
        β”‚
        β”œβ”€β”€ INDEX/                                       # Subject-level navigation and compliance tracking
        β”‚   β”œβ”€β”€ README.md                                # Index usage and regeneration for this subject
        β”‚   β”œβ”€β”€ SSOT_INDEX.yaml                          # Authoritative sources within this subject
        β”‚   β”œβ”€β”€ TRACE_MATRIX.csv                         # Intra-subject traceability (REQ↔DES↔TEST↔PUB)
        β”‚   β”œβ”€β”€ ID_REGISTRY.csv                          # All IDs within this subject
        β”‚   └── COMPLIANCE_STATUS.yaml                   # Certification requirement compliance dashboard
        β”‚
        β”œβ”€β”€ KDB/                                         # Knowledge Data Base β€” authoritative engineering truth
        β”‚   β”œβ”€β”€ README.md                                # KDB structure, DEV vs LM distinction, policies
        β”‚   β”œβ”€β”€ DEV/                                     # Development workspace (NOT baselined, mutable)
        β”‚   β”‚   β”œβ”€β”€ working/                             # Active work-in-progress artifacts
        β”‚   β”‚   β”œβ”€β”€ trade-studies/                       # Trade study drafts and comparisons
        β”‚   β”‚   β”œβ”€β”€ prototypes/                          # Prototype designs, code, models
        β”‚   β”‚   └── dev-evidence/                        # Supporting evidence not yet promoted
        β”‚   └── LM/                                      # Lifecycle-Managed artifacts (BASELINED, controlled)
        β”‚       └── SSOT/                                # Single Source of Truth container
        β”‚           β”œβ”€β”€ SSOT_POLICY.md                   # What qualifies as SSOT, promotion rules
        β”‚           └── PLM/                             # Product Lifecycle Management (LC01–LC10)
        β”‚               β”œβ”€β”€ LC01_PROBLEM_STATEMENT/      # Uncertainty orchestration and planning
        β”‚               β”‚   β”œβ”€β”€ README.md                # LC01 purpose: KNOT/KNU management overview
        β”‚               β”‚   β”œβ”€β”€ KNOTS.csv                # Uncertainty register (KNOT-ATAxx-yy-zz-NNN)
        β”‚               β”‚   β”œβ”€β”€ KNU_PLAN.csv             # Planned knowledge units per KNOT
        β”‚               β”‚   β”œβ”€β”€ TIMELINE.csv             # Milestones and target dates for closure
        β”‚               β”‚   β”œβ”€β”€ RACI.csv                 # Stakeholder responsibility matrix
        β”‚               β”‚   β”œβ”€β”€ TRACE_LC01.csv           # Traceability from KNOTβ†’KNUβ†’artifact
        β”‚               β”‚   └── PACKAGES/                # LC01 artifact packages by type
        β”‚               β”‚       β”œβ”€β”€ KNOT_MGMT/           # KNOT lifecycle management artifacts
        β”‚               β”‚       β”œβ”€β”€ KNU_PLANNING/        # KNU planning and scheduling artifacts
        β”‚               β”‚       β”œβ”€β”€ GOVERNANCE/          # LC01-specific governance documents
        β”‚               β”‚       └── INCENTIVES/          # Token allocation for this subject's KNOTs
        β”‚               β”œβ”€β”€ LC02_SYSTEM_REQUIREMENTS/    # Requirements definition and management
        β”‚               β”‚   β”œβ”€β”€ README.md                # LC02 purpose: requirements engineering overview
        β”‚               β”‚   β”œβ”€β”€ REQUIREMENTS_MANAGEMENT_PLAN.md  # How requirements are captured/traced
        β”‚               β”‚   β”œβ”€β”€ TRACE_LC02.csv           # REQβ†’parent, REQβ†’derived traceability
        β”‚               β”‚   └── PACKAGES/                # LC02 artifact packages by type
        β”‚               β”‚       β”œβ”€β”€ REQ/                 # Requirement specifications (SRS, SSS)
        β”‚               β”‚       β”œβ”€β”€ ICD/                 # Interface Control Documents
        β”‚               β”‚       β”œβ”€β”€ DATA/                # Data requirements and schemas
        β”‚               β”‚       └── COMPLIANCE_INTENT/   # Intended means of compliance per requirement
        β”‚               β”œβ”€β”€ LC03_SAFETY_RELIABILITY/     # Safety assessment and reliability engineering
        β”‚               β”‚   β”œβ”€β”€ README.md                # LC03 purpose: safety/reliability overview
        β”‚               β”‚   β”œβ”€β”€ SAFETY_ASSESSMENT_PLAN.md  # Safety assessment methodology (ARP4761)
        β”‚               β”‚   β”œβ”€β”€ TRACE_LC03.csv           # Hazardβ†’requirementβ†’mitigation traceability
        β”‚               β”‚   └── PACKAGES/                # LC03 artifact packages by type
        β”‚               β”‚       β”œβ”€β”€ SAFETY/              # FHA, PSSA, SSA, hazard logs
        β”‚               β”‚       β”œβ”€β”€ RELIABILITY/         # FMEA, FMECA, reliability predictions
        β”‚               β”‚       └── HAZARD_MGMT/         # Hazard tracking and mitigation status
        β”‚               β”œβ”€β”€ LC04_DESIGN_DEFINITION_DMU/  # Design definition and Digital Mock-Up
        β”‚               β”‚   β”œβ”€β”€ README.md                # LC04 purpose: design engineering overview
        β”‚               β”‚   β”œβ”€β”€ DESIGN_DESCRIPTION_DOCUMENT.md  # System/component design narrative
        β”‚               β”‚   β”œβ”€β”€ TRACE_LC04.csv           # REQβ†’design element traceability
        β”‚               β”‚   └── PACKAGES/                # LC04 artifact packages by type
        β”‚               β”‚       β”œβ”€β”€ DESIGN/              # Design specifications, drawings, models
        β”‚               β”‚       β”œβ”€β”€ CONFIG/              # Configuration items and BOM
        β”‚               β”‚       └── INTERFACES/          # Interface definitions and protocols
        β”‚               β”œβ”€β”€ LC05_ANALYSIS_MODELS_CAE/    # Analysis and Computer-Aided Engineering
        β”‚               β”‚   β”œβ”€β”€ README.md                # LC05 purpose: analysis/modeling overview
        β”‚               β”‚   β”œβ”€β”€ ANALYSIS_PLAN.md         # Analysis strategy and tool selection
        β”‚               β”‚   β”œβ”€β”€ TRACE_LC05.csv           # Modelβ†’requirementβ†’result traceability
        β”‚               β”‚   └── PACKAGES/                # LC05 artifact packages by type
        β”‚               β”‚       β”œβ”€β”€ ANALYSIS/            # Analysis reports (FEA, CFD, thermal)
        β”‚               β”‚       β”œβ”€β”€ MODELS/              # Simulation models and input files
        β”‚               β”‚       └── VALIDATION/          # Model validation evidence
        β”‚               β”œβ”€β”€ LC06_INTEGRATION_TEST_PMU/   # Integration, test, and Physical Mock-Up
        β”‚               β”‚   β”œβ”€β”€ README.md                # LC06 purpose: test engineering overview
        β”‚               β”‚   β”œβ”€β”€ TEST_PROGRAM_PLAN.md     # Test strategy, matrix, and resources
        β”‚               β”‚   β”œβ”€β”€ TRACE_LC06.csv           # REQβ†’test caseβ†’result traceability
        β”‚               β”‚   └── PACKAGES/                # LC06 artifact packages by type
        β”‚               β”‚       β”œβ”€β”€ TEST/                # Test procedures, reports, data
        β”‚               β”‚       β”œβ”€β”€ INTEGRATION/         # Integration test artifacts
        β”‚               β”‚       └── CONFORMITY/          # Conformity inspection records
        β”‚               β”œβ”€β”€ LC07_QUALITY/                # Quality assurance and process compliance
        β”‚               β”‚   β”œβ”€β”€ README.md                # LC07 purpose: quality management overview
        β”‚               β”‚   β”œβ”€β”€ QUALITY_ASSURANCE_PLAN.md  # QA methodology and audit schedule
        β”‚               β”‚   β”œβ”€β”€ TRACE_LC07.csv           # Processβ†’auditβ†’finding traceability
        β”‚               β”‚   └── PACKAGES/                # LC07 artifact packages by type
        β”‚               β”‚       β”œβ”€β”€ QA/                  # Audit reports, NCR logs, CAPA
        β”‚               β”‚       β”œβ”€β”€ PROCESS_COMPLIANCE/  # Process adherence evidence
        β”‚               β”‚       └── ACCEPTANCE/          # Acceptance test and inspection records
        β”‚               β”œβ”€β”€ LC08_FLIGHT_TEST_CERTIFICATION/  # Certification and flight test
        β”‚               β”‚   β”œβ”€β”€ README.md                # LC08 purpose: certification overview
        β”‚               β”‚   β”œβ”€β”€ CERTIFICATION_PLAN.md    # Certification strategy and timeline
        β”‚               β”‚   β”œβ”€β”€ MEANS_OF_COMPLIANCE.md   # MoC matrix (how each req is shown compliant)
        β”‚               β”‚   β”œβ”€β”€ COMPLIANCE_MATRIX.csv    # Regulationβ†’requirementβ†’evidence matrix
        β”‚               β”‚   β”œβ”€β”€ TRACE_LC08.csv           # Regulationβ†’evidence traceability
        β”‚               β”‚   └── PACKAGES/                # LC08 artifact packages by type
        β”‚               β”‚       β”œβ”€β”€ CERT_BASIS/          # Certification basis documents (CS/FAR refs)
        β”‚               β”‚       β”œβ”€β”€ COMPLIANCE/          # Compliance substantiation data
        β”‚               β”‚       └── FLIGHT_TEST/         # Flight test plans, reports, data
        β”‚               β”œβ”€β”€ LC09_GREEN_AIRCRAFT_BASELINES/  # Environmental and sustainability
        β”‚               β”‚   β”œβ”€β”€ README.md                # LC09 purpose: ESG/sustainability overview
        β”‚               β”‚   β”œβ”€β”€ ESG_REPORT.md            # Environmental, Social, Governance summary
        β”‚               β”‚   β”œβ”€β”€ TRACE_LC09.csv           # ESG goalβ†’actionβ†’evidence traceability
        β”‚               β”‚   └── PACKAGES/                # LC09 artifact packages by type
        β”‚               β”‚       β”œβ”€β”€ ESG/                 # ESG metrics and reporting
        β”‚               β”‚       β”œβ”€β”€ LCA/                 # Life Cycle Assessment artifacts
        β”‚               β”‚       └── ENV_COMPLIANCE/      # Environmental regulation compliance
        β”‚               └── LC10_INDUSTRIALIZATION_PRODUCTION_CAM/  # Manufacturing and production
        β”‚                   β”œβ”€β”€ README.md                # LC10 purpose: industrialization overview
        β”‚                   β”œβ”€β”€ PRODUCTION_PLAN.md       # Production strategy and ramp-up
        β”‚                   β”œβ”€β”€ TRACE_LC10.csv           # Designβ†’processβ†’tooling traceability
        β”‚                   └── PACKAGES/                # LC10 artifact packages by type
        β”‚                       β”œβ”€β”€ INDUSTRIAL/          # Manufacturing process specs
        β”‚                       β”œβ”€β”€ SUPPLY/              # Supply chain and procurement
        β”‚                       └── QUALITY_PROD/        # Production quality control
        β”‚
        β”œβ”€β”€ CONTRACTS/                                   # Contract-first governance (KDBβ†’IDB transformation)
        β”‚   β”œβ”€β”€ README.md                                # Contract system overview and enforcement
        β”‚   β”œβ”€β”€ KITDM-CTR-LM-CSDB_ATAxx-yy-zz.yaml       # Contract: KDBβ†’CSDB publication rules
        β”‚   β”œβ”€β”€ KITDM-CTR-LM-EXPORT_ATAxx-yy-zz.yaml     # Contract: CSDBβ†’PDF/HTML export rules
        β”‚   β”œβ”€β”€ KITDM-CTR-LM-IETP_ATAxx-yy-zz.yaml       # Contract: CSDBβ†’IETP runtime packaging
        β”‚   β”œβ”€β”€ KITDM-CTR-OPS-SB_ATAxx-yy-zz.yaml        # Contract: Service Bulletin generation rules
        β”‚   β”œβ”€β”€ KITDM-CTR-OPS-REPAIR_ATAxx-yy-zz.yaml    # Contract: Repair data publication rules
        β”‚   β”œβ”€β”€ KITDM-CTR-OPS-QUERY_ATAxx-yy-zz.yaml     # Contract: Technical query response rules
        β”‚   β”œβ”€β”€ KITDM-CTR-OPS-COC_ATAxx-yy-zz.yaml       # Contract: Certificate of Conformance rules
        β”‚   β”œβ”€β”€ CONTRACT_APPROVAL_LOG.csv                # Log of contract approvals and versions
        β”‚   └── EVIDENCE/                                # Contract validation evidence
        β”‚       β”œβ”€β”€ ACCEPTANCE_CRITERIA.md               # Pass/fail criteria for contract satisfaction
        β”‚       β”œβ”€β”€ TRACE_MATRIX_TEMPLATE.csv            # Template for inputβ†’output trace validation
        β”‚       └── VALIDATION_REPORTS/                  # Per-run validation report storage
        β”‚
        β”œβ”€β”€ ASIT/                                        # Aircraft System Information Transponder (automation)
        β”‚   β”œβ”€β”€ README.md                                # ASIT purpose: automated KDBβ†’IDB pipeline
        β”‚   β”œβ”€β”€ asit_config.yaml                         # Global ASIT configuration for this subject
        β”‚   β”œβ”€β”€ pipelines/                               # Pipeline definitions (DAGs, workflows)
        β”‚   β”œβ”€β”€ rules/                                   # Transformation and validation rules
        β”‚   β”œβ”€β”€ k8s/                                     # Kubernetes deployment manifests (if applicable)
        β”‚   └── runs/                                    # Historical run artifacts (immutable)
        β”‚       └── YYYYMMDD-HHMM__<contract-id>/        # Individual run folder (timestamped)
        β”‚           β”œβ”€β”€ INPUT_MANIFEST.json              # Snapshot of input artifacts consumed
        β”‚           β”œβ”€β”€ CONTEXT.json                     # Runtime context (versions, configs)
        β”‚           β”œβ”€β”€ SELECTION_MANIFEST.json          # Which KDB artifacts were selected
        β”‚           β”œβ”€β”€ OUTPUT_MANIFEST.json             # What IDB artifacts were produced
        β”‚           β”œβ”€β”€ TRACE_MATRIX.csv                 # Inputβ†’output trace for this run
        β”‚           β”œβ”€β”€ VALIDATION_REPORT.json           # BREX/schema validation results
        β”‚           β”œβ”€β”€ METRICS.json                     # Run metrics (duration, counts, errors)
        β”‚           └── LOG.txt                          # Execution log for debugging
        β”‚
        └── IDB/                                         # Information Data Base β€” consumption/delivery surface
            β”œβ”€β”€ README.md                                # IDB structure, OPS vs PUB distinction
            β”œβ”€β”€ IDB_GOVERNANCE.md                        # IDB-specific governance and release policy
            β”‚
            β”œβ”€β”€ OPS/                                     # Operational domain (in-service lifecycle)
            β”‚   └── LM/                                  # Lifecycle-Managed operational artifacts (LC11–LC14)
            β”‚       β”œβ”€β”€ LC11_OPERATIONS_CUSTOMIZATION/   # Operator customization and configuration
            β”‚       β”‚   β”œβ”€β”€ README.md                    # LC11 purpose: operator customization overview
            β”‚       β”‚   └── PACKAGES/                    # LC11 artifact packages by type
            β”‚       β”‚       β”œβ”€β”€ CUSTOMER_DELTAS/         # Operator-specific configuration changes
            β”‚       β”‚       β”œβ”€β”€ OPS_CONFIG/              # Operational configuration parameters
            β”‚       β”‚       └── RELEASE_NOTES/           # Operator-facing release documentation
            β”‚       β”œβ”€β”€ LC12_SUPPORT_SERVICES/           # Technical support and field services
            β”‚       β”‚   β”œβ”€β”€ README.md                    # LC12 purpose: support services overview
            β”‚       β”‚   β”œβ”€β”€ PACKAGES/                    # LC12 artifact packages by type
            β”‚       β”‚   β”‚   β”œβ”€β”€ SB/                      # Service Bulletins (mandatory/optional)
            β”‚       β”‚   β”‚   β”œβ”€β”€ REPAIR/                  # In-service repair authorizations
            β”‚       β”‚   β”‚   β”œβ”€β”€ QUERY/                   # Technical query responses (QSR)
            β”‚       β”‚   β”‚   β”œβ”€β”€ AOG/                     # Aircraft on Ground support records
            β”‚       β”‚   β”‚   β”œβ”€β”€ COC/                     # Certificates of Conformance issued
            β”‚       β”‚   β”‚   └── COMPLIANCE/              # AD/SB compliance tracking
            β”‚       β”‚   β”œβ”€β”€ CASES/                       # Support case management records
            β”‚       β”‚   └── INDEX/                       # LC12 navigation and case index
            β”‚       β”œβ”€β”€ LC13_MRO_SUSTAINMENT/            # Maintenance, Repair, Overhaul
            β”‚       β”‚   β”œβ”€β”€ README.md                    # LC13 purpose: MRO sustainment overview
            β”‚       β”‚   └── PACKAGES/                    # LC13 artifact packages by type
            β”‚       β”‚       β”‚
            β”‚       β”‚       β”œβ”€β”€ Maintenance_Source/      # Scheduled maintenance β†’ publishes to IDB/PUB/AMM/
            β”‚       β”‚       β”‚   β”œβ”€β”€ README.md            # Maintenance source overview + AMM mapping
            β”‚       β”‚       β”‚   β”œβ”€β”€ AMM_TASKS/           # Aircraft Maintenance Manual task cards
            β”‚       β”‚       β”‚   β”œβ”€β”€ MSG3_TASK_CARDS/     # MSG-3 derived maintenance tasks
            β”‚       β”‚       β”‚   β”œβ”€β”€ MPD_TASKS/           # Maintenance Planning Document tasks
            β”‚       β”‚       β”‚   β”œβ”€β”€ TASK_EXECUTION_LOGS/ # Completed task execution records
            β”‚       β”‚       β”‚   β”œβ”€β”€ CONDITION_MONITORING/# On-condition and health monitoring
            β”‚       β”‚       β”‚   └── EVIDENCE/            # Maintenance completion evidence
            β”‚       β”‚       β”‚
            β”‚       β”‚       β”œβ”€β”€ Repair_Source/           # Structural repairs β†’ publishes to IDB/PUB/SRM/
            β”‚       β”‚       β”‚   β”œβ”€β”€ README.md            # Repair source overview + SRM mapping
            β”‚       β”‚       β”‚   β”œβ”€β”€ SRM_REPAIRS/         # Structural Repair Manual repairs
            β”‚       β”‚       β”‚   β”œβ”€β”€ REPAIR_SCHEMES/      # Approved repair schemes/drawings
            β”‚       β”‚       β”‚   β”œβ”€β”€ DAMAGE_REPORTS/      # Damage assessment reports
            β”‚       β”‚       β”‚   β”œβ”€β”€ DISPOSITION_RECORDS/ # Repair disposition decisions
            β”‚       β”‚       β”‚   β”œβ”€β”€ TECHNICAL_APPROVALS/ # Engineering approvals for repairs
            β”‚       β”‚       β”‚   └── EVIDENCE/            # Repair completion evidence
            β”‚       β”‚       β”‚
            β”‚       β”‚       └── Overhaul_Source/         # Component overhaul β†’ publishes to IDB/PUB/CMM/
            β”‚       β”‚           β”œβ”€β”€ README.md            # Overhaul source overview + CMM mapping
            β”‚       β”‚           β”œβ”€β”€ SHOP_VISIT_REPORTS/  # Component shop visit reports
            β”‚       β”‚           β”œβ”€β”€ CMM_TASKS/           # Component Maintenance Manual tasks
            β”‚       β”‚           β”œβ”€β”€ TEARDOWN_FINDINGS/   # Inspection findings at teardown
            β”‚       β”‚           β”œβ”€β”€ PARTS_REPLACEMENT/   # Parts replacement records
            β”‚       β”‚           β”œβ”€β”€ CONFIG_STATUS_EFFECTIVITY/  # As-maintained configuration
            β”‚       β”‚           └── EVIDENCE/            # Overhaul completion evidence
            β”‚       └── LC14_RETIREMENT_CIRCULARITY/     # End-of-life and circular economy
            β”‚           β”œβ”€β”€ README.md                    # LC14 purpose: retirement/circularity overview
            β”‚           └── PACKAGES/                    # LC14 artifact packages by type
            β”‚               β”œβ”€β”€ DISMANTLING/             # Aircraft dismantling procedures/records
            β”‚               β”œβ”€β”€ MATERIAL_RECOVERY/       # Material recovery and recycling data
            β”‚               β”œβ”€β”€ DPP_CLOSURE/             # Digital Product Passport closure
            β”‚               └── ESG_EOL/                 # End-of-life ESG reporting
            β”‚
            β”œβ”€β”€ PUB/                                     # Publication deliverables (S1000D + exports)
            β”‚   β”œβ”€β”€ README.md                            # Publication structure and BREX overview
            β”‚   β”‚
            β”‚   β”œβ”€β”€ AMM/                                 # Aircraft Maintenance Manual ← LC13/Maintenance_Source
            β”‚   β”‚   β”œβ”€β”€ CSDB/                            # S1000D Common Source Database
            β”‚   β”‚   β”‚   β”œβ”€β”€ DM/                          # Data Modules (atomic content units)
            β”‚   β”‚   β”‚   β”œβ”€β”€ PM/                          # Publication Modules (assembly structures)
            β”‚   β”‚   β”‚   β”œβ”€β”€ DML/                         # Data Module Lists (controlled inventories)
            β”‚   β”‚   β”‚   β”œβ”€β”€ BREX/                        # Business Rules Exchange (validation rules)
            β”‚   β”‚   β”‚   β”œβ”€β”€ ICN/                         # Information Control Numbers (graphics)
            β”‚   β”‚   β”‚   β”œβ”€β”€ COMMON/                      # Reusable content (warnings, cautions, notes)
            β”‚   β”‚   β”‚   └── APPLICABILITY/               # ACT/PCT/CCT applicability filtering
            β”‚   β”‚   β”œβ”€β”€ EXPORT/                          # Rendered deliverables
            β”‚   β”‚   β”‚   β”œβ”€β”€ PDF/                         # PDF exports per publication
            β”‚   β”‚   β”‚   └── HTML/                        # HTML exports per publication
            β”‚   β”‚   └── IETP_RUNTIME/                    # Interactive Electronic Technical Publication
            β”‚   β”‚       β”œβ”€β”€ app/                         # IETP viewer application code
            β”‚   β”‚       β”œβ”€β”€ data/                        # Pre-processed content for viewer
            β”‚   β”‚       β”œβ”€β”€ operators/                   # Operator-specific view configurations
            β”‚   β”‚       └── README.md                    # IETP deployment and configuration guide
            β”‚   β”‚
            β”‚   β”œβ”€β”€ IPC/                                 # Illustrated Parts Catalog publications
            β”‚   β”‚
            β”‚   β”œβ”€β”€ SRM/                                 # Structural Repair Manual ← LC13/Repair_Source
            β”‚   β”‚   β”œβ”€β”€ CSDB/                            # S1000D Common Source Database
            β”‚   β”‚   β”‚   β”œβ”€β”€ DM/                          # Data Modules (repair procedures)
            β”‚   β”‚   β”‚   β”œβ”€β”€ PM/                          # Publication Modules
            β”‚   β”‚   β”‚   β”œβ”€β”€ DML/                         # Data Module Lists
            β”‚   β”‚   β”‚   β”œβ”€β”€ BREX/                        # Business Rules Exchange
            β”‚   β”‚   β”‚   β”œβ”€β”€ ICN/                         # Graphics (damage maps, repair drawings)
            β”‚   β”‚   β”‚   β”œβ”€β”€ COMMON/                      # Reusable content
            β”‚   β”‚   β”‚   └── APPLICABILITY/               # ACT/PCT/CCT
            β”‚   β”‚   β”œβ”€β”€ EXPORT/                          # Rendered deliverables
            β”‚   β”‚   β”‚   β”œβ”€β”€ PDF/                         # PDF exports
            β”‚   β”‚   β”‚   └── HTML/                        # HTML exports
            β”‚   β”‚   └── IETP_RUNTIME/                    # Interactive viewer
            β”‚   β”‚
            β”‚   └── CMM/                                 # Component Maintenance Manual ← LC13/Overhaul_Source
            β”‚       β”œβ”€β”€ CSDB/                            # S1000D Common Source Database
            β”‚       β”‚   β”œβ”€β”€ DM/                          # Data Modules (overhaul procedures)
            β”‚       β”‚   β”œβ”€β”€ PM/                          # Publication Modules
            β”‚       β”‚   β”œβ”€β”€ DML/                         # Data Module Lists
            β”‚       β”‚   β”œβ”€β”€ BREX/                        # Business Rules Exchange
            β”‚       β”‚   β”œβ”€β”€ ICN/                         # Graphics (exploded views, tooling)
            β”‚       β”‚   β”œβ”€β”€ COMMON/                      # Reusable content
            β”‚       β”‚   └── APPLICABILITY/               # ACT/PCT/CCT
            β”‚       β”œβ”€β”€ EXPORT/                          # Rendered deliverables
            β”‚       β”‚   β”œβ”€β”€ PDF/                         # PDF exports
            β”‚       β”‚   └── HTML/                        # HTML exports
            β”‚       └── IETP_RUNTIME/                    # Interactive viewer
            β”‚
            └── INDEX/                                   # IDB provenance, audit, and release tracking
                β”œβ”€β”€ IDB_RELEASE_NOTES.md                 # Release notes for current IDB version
                β”œβ”€β”€ IDB_TRACE_SUMMARY.md                 # Summary of KDBβ†’IDB transformation traces
                β”œβ”€β”€ IDB_INDEX.json                       # Machine-readable IDB artifact index
                β”œβ”€β”€ PUBLICATION_MANIFEST.yaml            # List of all publications with versions
                β”œβ”€β”€ BASELINE_REFERENCE.yaml              # Which KDB baseline produced this IDB
                β”œβ”€β”€ APPLICABILITY_INDEX.json             # Applicability cross-reference (MSN/config)
                β”œβ”€β”€ OPERATOR_VIEWS.json                  # Operator-specific view configurations
                β”œβ”€β”€ COMPLIANCE_CHECKLIST.md              # Publication compliance verification checklist
                β”œβ”€β”€ COMPLIANCE_STATUS_DASHBOARD.html     # Visual compliance status (generated)
                β”œβ”€β”€ CHANGELOG.md                         # IDB change history (delta from prior release)
                β”œβ”€β”€ METRICS_DASHBOARD.html               # Publication metrics (coverage, quality)
                └── DPP_ANCHOR_RECEIPT.json              # Digital Product Passport anchoring proof

Legend

Symbol Meaning
# Inline comment explaining purpose
/ Directory (folder)
.md Markdown narrative document
.csv Comma-separated tabular data
.yaml Structured configuration/data
.json Machine-readable data/manifest
.html Generated visual artifact

LC13 Source β†’ Publication Mapping

OPS Source (LC13) Publishes To Manual Type
Maintenance_Source/ IDB/PUB/AMM/ Aircraft Maintenance Manual
Repair_Source/ IDB/PUB/SRM/ Structural Repair Manual
Overhaul_Source/ IDB/PUB/CMM/ Component Maintenance Manual

Data Flow:

LC13/PACKAGES/Maintenance_Source/AMM_TASKS/
        β”‚
        β–Ό (via CONTRACTS + ASIT pipeline)
        β”‚
IDB/PUB/AMM/CSDB/DM/

Each source folder contains the authoritative operational data that feeds the corresponding S1000D publication through the contract-governed ASIT transformation pipeline.


Quick Reference: Key Directories

Path Purpose Baseline Status
KDB/DEV/ Active development workspace NOT baselined
KDB/LM/SSOT/PLM/ Authoritative engineering truth BASELINED
IDB/OPS/LM/ In-service operational data BASELINED
IDB/OPS/LM/LC13/.../Maintenance_Source/ AMM source data BASELINED
IDB/OPS/LM/LC13/.../Repair_Source/ SRM source data BASELINED
IDB/OPS/LM/LC13/.../Overhaul_Source/ CMM source data BASELINED
IDB/PUB/AMM/ Aircraft Maintenance Manual BASELINED
IDB/PUB/SRM/ Structural Repair Manual BASELINED
IDB/PUB/CMM/ Component Maintenance Manual BASELINED
IDB/PUB/IPC/ Illustrated Parts Catalog BASELINED
GENESIS/ Uncertainty discovery NOT baselined
CONTRACTS/ Transformation governance BASELINED
ASIT/runs/ Automation execution history Immutable archive

Canonical β€œPackage Types” (What belongs under PACKAGES/)

These are the generic package types used across all ATA subjects, aligned with your KDB/LM/SSOT/PLM/LCxx/.../PACKAGES/ pattern and your OPS split:

PLM (LC01–LC10)

  • LC01: KNOT_MGMT, KNU_PLANNING, GOVERNANCE, INCENTIVES
  • LC02: REQ, ICD, DATA, COMPLIANCE_INTENT
  • LC03: SAFETY, RELIABILITY, HAZARD_MGMT
  • LC04: DESIGN, CONFIG, INTERFACES
  • LC05: ANALYSIS, MODELS, VALIDATION
  • LC06: TEST, INTEGRATION, CONFORMITY
  • LC07: QA, PROCESS_COMPLIANCE, ACCEPTANCE
  • LC08: CERT_BASIS, COMPLIANCE, FLIGHT_TEST
  • LC09: ESG, LCA, ENV_COMPLIANCE
  • LC10: INDUSTRIAL, SUPPLY, QUALITY_PROD

OPS (LC11–LC14)

  • LC11: CUSTOMER_DELTAS, OPS_CONFIG, RELEASE_NOTES
  • LC12: SB, REPAIR, QUERY, AOG, COC, COMPLIANCE (+ CASES, INDEX)
  • LC13: Maintenance_Source, Repair_Source, Overhaul_Source (each with EVIDENCE/)
  • LC14: DISMANTLING, MATERIAL_RECOVERY, DPP_CLOSURE, ESG_EOL

Minimal ID Grammar (to keep everything consistent)

  • Section-level GENESIS:

    • O-KNOT-ATA<XX>-<YY>-<NNN>
    • Y-KNOT-ATA<XX>-<YY>-<NNN>
  • Subject-level orchestration:

    • KNOT-ATA<XX>-<YY>-<ZZ>-<NNN>
    • KNU-ATA<XX>-<YY>-<ZZ>-<KNOTNNN>-<TYPE>-<NNN>

Example subject slug you gave:

  • ATA28-10-00_fuel-storage-general is valid as:

    • folder: 28-10-storage/28-10-00_fuel-storage-general/
    • scope token: ATA28-10-00

4. OPT-IN Framework

4.1 Five-Axis Topology

The OPT-IN Framework organizes all 79 ATA chapters across five axes:

Axis Name ATA Chapters Scope
O Organizations 00–05 General, maintenance policy, operations org, airworthiness
P Programs 06–12 Dimensions, lifting, leveling, towing, parking, servicing
T Technologies 20–80 All on-board systems (airframe, avionics, propulsion, etc.)
I Infrastructures 03*, 08*, 10*, 12*, 85, IN-XX Ground support, Hβ‚‚ logistics, facilities
N Neural Networks 95, 96, 97, 98 AI/ML, traceability, DPP, governance

Note: Some chapters appear in multiple axes with different sub-scopes (e.g., ATA 08 PROGRAMS vs ATA 08 INFRA)

4.2 Complete Directory Structure

Click to expand full OPT-IN directory tree
OPT-IN_FRAMEWORK/
β”œβ”€β”€ README.md
β”œβ”€β”€ 00_INDEX.md
β”‚
β”œβ”€β”€ O-ORGANIZATIONS/                                      # ATA 00–05
β”‚   β”œβ”€β”€ README.md
β”‚   β”œβ”€β”€ 00_INDEX.md
β”‚   β”œβ”€β”€ ATA_00-GENERAL/
β”‚   β”œβ”€β”€ ATA_01-MAINTENANCE_POLICY/
β”‚   β”œβ”€β”€ ATA_02-OPERATIONS_ORG/
β”‚   β”œβ”€β”€ ATA_03-SUPPORT_INFORMATION/
β”‚   β”œβ”€β”€ ATA_04-AIRWORTHINESS_LIMITATIONS/
β”‚   └── ATA_05-TIME_LIMITS_MAINT_CHECKS/
β”‚
β”œβ”€β”€ P-PROGRAMS/                                           # ATA 06–12
β”‚   β”œβ”€β”€ README.md
β”‚   β”œβ”€β”€ 00_INDEX.md
β”‚   β”œβ”€β”€ ATA_06-DIMENSIONS_AND_AREAS/
β”‚   β”œβ”€β”€ ATA_07-LIFTING_AND_SHORING/
β”‚   β”œβ”€β”€ ATA_08-LEVELING_AND_WEIGHING/
β”‚   β”œβ”€β”€ ATA_09-TOWING_AND_TAXIING/
β”‚   β”œβ”€β”€ ATA_10-PARKING_MOORING_STORAGE_RETURN_TO_SERVICE/
β”‚   β”œβ”€β”€ ATA_11-PLACARDS_AND_MARKINGS/
β”‚   └── ATA_12-SERVICING/
β”‚
β”œβ”€β”€ T-TECHNOLOGIES_AMEDEOPELLICCIA-ON_BOARD_SYSTEMS/
β”‚   β”œβ”€β”€ README.md
β”‚   β”œβ”€β”€ 00_INDEX.md
β”‚   β”‚
β”‚   β”œβ”€β”€ A-AIRFRAME_CABINS/
β”‚   β”‚   β”œβ”€β”€ ATA_20-STANDARD_PRACTICES_AIRFRAME/
β”‚   β”‚   β”œβ”€β”€ ATA_25-EQUIPMENT_FURNISHINGS/
β”‚   β”‚   β”œβ”€β”€ ATA_44-CABIN_SYSTEMS/
β”‚   β”‚   β”œβ”€β”€ ATA_50-CARGO_AND_ACCESSORY_COMPARTMENTS/
β”‚   β”‚   β”œβ”€β”€ ATA_51-STANDARD_PRACTICES_GENERAL/
β”‚   β”‚   β”œβ”€β”€ ATA_52-DOORS/
β”‚   β”‚   β”œβ”€β”€ ATA_53-FUSELAGE/
β”‚   β”‚   β”œβ”€β”€ ATA_54-NACELLES_PYLONS/
β”‚   β”‚   β”œβ”€β”€ ATA_55-STABILIZERS/
β”‚   β”‚   β”œβ”€β”€ ATA_56-WINDOWS/
β”‚   β”‚   └── ATA_57-WINGS/
β”‚   β”‚
β”‚   β”œβ”€β”€ M-MECHANICS/
β”‚   β”‚   β”œβ”€β”€ ATA_27-FLIGHT_CONTROLS/
β”‚   β”‚   β”œβ”€β”€ ATA_29-HYDRAULIC_POWER/
β”‚   β”‚   └── ATA_32-LANDING_GEAR/
β”‚   β”‚
β”‚   β”œβ”€β”€ E1-ENVIRONMENT/
β”‚   β”‚   β”œβ”€β”€ ATA_21-AIR_CONDITIONING_PRESSURIZATION/
β”‚   β”‚   β”œβ”€β”€ ATA_26-FIRE_PROTECTION/
β”‚   β”‚   β”œβ”€β”€ ATA_30-ICE_RAIN_PROTECTION/
β”‚   β”‚   β”œβ”€β”€ ATA_35-OXYGEN/
β”‚   β”‚   β”œβ”€β”€ ATA_36-PNEUMATIC/
β”‚   β”‚   β”œβ”€β”€ ATA_37-VACUUM/
β”‚   β”‚   β”œβ”€β”€ ATA_38-WATER_WASTE/
β”‚   β”‚   └── ATA_47-NITROGEN_GENERATION_SYSTEM/
β”‚   β”‚
β”‚   β”œβ”€β”€ D-DATA/
β”‚   β”‚   β”œβ”€β”€ ATA_31-INDICATING_RECORDING/
β”‚   β”‚   └── ATA_45-CENTRAL_MAINTENANCE_SYSTEM_CMS/
β”‚   β”‚
β”‚   β”œβ”€β”€ I-INFORMATION/
β”‚   β”‚   └── ATA_46-INFORMATION_SYSTEMS/
β”‚   β”‚
β”‚   β”œβ”€β”€ E2-ENERGY/
β”‚   β”‚   β”œβ”€β”€ ATA_24-ELECTRICAL_POWER/
β”‚   β”‚   └── ATA_49-AIRBORNE_AUXILIARY_POWER_APU/
β”‚   β”‚
β”‚   β”œβ”€β”€ E3-ELECTRICS/
β”‚   β”‚   β”œβ”€β”€ ATA_33-LIGHTS/
β”‚   β”‚   └── ATA_39-ELECTRICAL_ELECTRONIC_PANELS_MULTIPURPOSE_COMPONENTS/
β”‚   β”‚
β”‚   β”œβ”€β”€ L1-LOGICS/
β”‚   β”‚   └── 00_RESERVED_AS_REQUIRED/
β”‚   β”‚
β”‚   β”œβ”€β”€ L2-LINKS/
β”‚   β”‚   └── ATA_34-NAVIGATION/
β”‚   β”‚
β”‚   β”œβ”€β”€ C1-COMMS/
β”‚   β”‚   └── ATA_23-COMMUNICATIONS/
β”‚   β”‚
β”‚   β”œβ”€β”€ C2-CIRCULAR_CRYOGENIC_CELLS/
β”‚   β”‚   └── ATA_28-FUEL/
β”‚   β”‚
β”‚   β”œβ”€β”€ I2-INTELLIGENCE/
β”‚   β”‚   β”œβ”€β”€ ATA_95-AI_ML_MODELS/
β”‚   β”‚   └── ATA_97-SYNTHETIC_DATA_VALIDATION/
β”‚   β”‚
β”‚   β”œβ”€β”€ A2-AVIONICS/
β”‚   β”‚   β”œβ”€β”€ ATA_22-AUTO_FLIGHT/
β”‚   β”‚   └── ATA_42-INTEGRATED_MODULAR_AVIONICS/
β”‚   β”‚
β”‚   β”œβ”€β”€ O-OPERATING_SYSTEMS/
β”‚   β”‚   └── ATA_40-MULTISYSTEM/
β”‚   β”‚
β”‚   └── P-PROPULSION/
β”‚       β”œβ”€β”€ ATA_60-STANDARD_PRACTICES_PROPELLER_ROTOR/
β”‚       β”œβ”€β”€ ATA_61-PROPELLERS_PROPULSORS/
β”‚       β”œβ”€β”€ ATA_71-POWER_PLANT/
β”‚       β”œβ”€β”€ ATA_72-ENGINE_TURBINE_TURBOPROP_DUCTED_UNDUCTED_FAN/
β”‚       β”œβ”€β”€ ATA_73-ENGINE_FUEL_AND_CONTROL/
β”‚       β”œβ”€β”€ ATA_74-IGNITION/
β”‚       β”œβ”€β”€ ATA_75-AIR/
β”‚       β”œβ”€β”€ ATA_76-ENGINE_CONTROLS/
β”‚       β”œβ”€β”€ ATA_77-ENGINE_INDICATING/
β”‚       β”œβ”€β”€ ATA_78-EXHAUST/
β”‚       β”œβ”€β”€ ATA_79-OIL/
β”‚       └── ATA_80-STARTING/
β”‚
β”œβ”€β”€ I-INFRASTRUCTURES/                                     # Ground support
β”‚   β”œβ”€β”€ README.md
β”‚   β”œβ”€β”€ 00_INDEX.md
β”‚   β”œβ”€β”€ ATA_03-SUPPORT_INFRA/
β”‚   β”œβ”€β”€ ATA_08-LEVELING_AND_WEIGHING_INFRA/
β”‚   β”œβ”€β”€ ATA_10-PARKING_MOORING_STORAGE_RTS_INFRA/
β”‚   β”œβ”€β”€ ATA_12-SERVICING_INFRA/
β”‚   β”œβ”€β”€ ATA_85-FUEL_CELL_SYSTEMS_INFRA/
β”‚   └── ATA_IN_H2_GSE_AND_SUPPLY_CHAIN/
β”‚
└── N-NEURAL_NETWORKS/                                     # Governance + AI
    β”œβ”€β”€ README.md
    β”œβ”€β”€ 00_INDEX.md
    β”œβ”€β”€ ATA_96-TRACEABILITY_DPP_LEDGER/
    └── ATA_98-RESERVED_PROGRAM_SLOT/

5. Governance & Workflows

5.1 KNOT Lifecycle

Work in this repository is managed through KNOTs (uncertainties) and KNUs (artifacts):

Concept Definition
KNOT A Known uNknOwn Topic β€” an identified uncertainty requiring resolution
KNU A Knowledge Unit β€” a concrete artifact that addresses a KNOT

KNOT Lifecycle Flow

β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”
β”‚                           KNOT LIFECYCLE                                     β”‚
β”œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€
β”‚                                                                              β”‚
β”‚  1. IDENTIFICATION                                                           β”‚
β”‚     β”œβ”€ Uncertainty logged in KNOTS.csv                                       β”‚
β”‚     β”œβ”€ Residual uncertainty = 100 (maximum)                                  β”‚
β”‚     └─ Status = OPEN                                                         β”‚
β”‚                                                                              β”‚
β”‚  2. PLANNING                                                                 β”‚
β”‚     β”œβ”€ Expected KNUs defined in KNU_PLAN.csv                                β”‚
β”‚     β”œβ”€ Timeline milestones set in TIMELINE.csv                              β”‚
β”‚     β”œβ”€ RACI responsibilities assigned                                        β”‚
β”‚     └─ TT reward pool allocated in TOKENOMICS_TT.yaml                       β”‚
β”‚                                                                              β”‚
β”‚  3. EXECUTION                                                                β”‚
β”‚     β”œβ”€ KNU artifacts produced in LC02–LC14 and PUB/CSDB                     β”‚
β”‚     β”œβ”€ Effort and impact recorded per KNU                                   β”‚
β”‚     └─ Status = IN_PROGRESS                                                  β”‚
β”‚                                                                              β”‚
β”‚  4. CLOSURE                                                                  β”‚
β”‚     β”œβ”€ All KNUs reach COMPLETE or ACCEPTED status                           β”‚
β”‚     β”œβ”€ Residual reduced to target (e.g., 100 β†’ ≀10)                         β”‚
β”‚     β”œβ”€ All PUB artifacts pass BREX validation                               β”‚
β”‚     β”œβ”€ All trace links resolve (no dangling references)                     β”‚
β”‚     β”œβ”€ Signoffs captured in evidence pack                                   β”‚
β”‚     β”œβ”€ TT rewards distributed: w_i = α·Ê_i + (1-Ξ±)·Î_i                      β”‚
β”‚     β”œβ”€ Awards logged to AWARDS_TT.csv + finance/ledger.json                 β”‚
β”‚     └─ Status = CLOSED                                                       β”‚
β”‚                                                                              β”‚
β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜

KNOTS.csv Schema

Field Description
KNOT_ID Unique identifier (e.g., KNOT-ATA28-10-00-001)
Title Short description of the uncertainty
Problem_Statement What is unknown and why it matters
Scope In-scope / out-of-scope boundaries
Status OPEN / IN_PROGRESS / BLOCKED / CLOSED
Owner_AoR Primary Area of Responsibility
Stakeholders Semicolon-separated list of involved AoRs
Residual_Before Initial uncertainty level (0–100)
Residual_Target Acceptable residual at closure
Dependencies Other KNOTs this depends on
Target_Close_Date Expected closure date

KNU_PLAN.csv Schema

Field Description
KNU_ID Unique identifier (e.g., KNU-ATA28-10-00-REQ-001)
KNOT_ID Parent KNOT being addressed
KNU_Type REQ / ICD / ANA / TEST / SAF / CM / PUB
Artifact_Class SSOT or CSDB
Expected_Location Relative path to target folder
Acceptance_Criteria What makes this KNU complete
Verification_Method Review / Inspection / Test / BREX+CI
Owner_AoR Responsible stakeholder
Due_Date Target completion date
Status PLANNED / IN_PROGRESS / COMPLETE / ACCEPTED
Effort_Predicted Estimated effort (story points)

Allowed AoR (Area of Responsibility) Values

AoR Code Role
STK_SE Systems Engineering
STK_SAF Safety
STK_CERT Certification
STK_CM Configuration Management
STK_OPS Operations
STK_TEST Test & Verification
STK_PMO Program Management
STK_AI AI/ML Engineering
STK_CY Circularity
STK_MRO Maintenance, Repair, Overhaul
STK_DATA Data Management

5.2 Contract-Based Transformation

Every KDB β†’ IDB transformation is governed by an explicit contract:

Contract Structure (KITDM-CTR-XXX.yaml)

contract:
  id: "KITDM-CTR-001"
  name: "KDB to CSDB Transformation"
  version: "1.0.0"
  effective_date: "2026-01-15"

source:
  type: "KDB"
  paths:
    - "KDB/SSOT/PLM/LC04_DESIGN_DEFINITION_DMU/"
    - "KDB/SSOT/PLM/LC02_SYSTEM_REQUIREMENTS/"
  required_maturity: "ACCEPTED"

target:
  type: "IDB/PUB/CSDB"
  output_path: "IDB/PUB/AMM/CSDB/DM/"
  format: "S1000D-5.0"

transformation:
  rules:
    - rule_id: "TR-001"
      description: "Requirements to Descriptive DM"
      source_pattern: "LC02/**/REQ-*.md"
      target_template: "templates/dm-description.xml"
      validation: "BREX-001"
  
  exclusions:
    - "DRAFT/**"
    - "**/_archive/**"

validation:
  brex_rules:
    - "BREX/AMPEL-BREX-01.xml"
  schema_version: "S1000D-5.0"
  require_trace_matrix: true

governance:
  approvers:
    - "STK_CM"
    - "STK_SE"
  review_cycle: "30d"
  
audit:
  log_level: "FULL"
  retention: "10y"
  hash_algorithm: "SHA-256"

5.3 Tokenomics & Incentive Alignment

Teknia Token (TT) System

Aspect Specification
Token TT (1 TT = 360 deg)
Genesis Supply 2,000,000,000 TT
Fee Structure Ο€-tier: 0.314% / 0.99% / 3.14%
Reward Fee 0.5%
Ledger finance/ledger.json (SHA-256 hash chain)

TOKENOMICS_TT.yaml Schema

tokenomics:
  token_symbol: "TT"
  unit: "deg"
  deg_per_tt: 360

knot_reward:
  knot_id: "KNOT-ATA28-10-00-001"
  pool_tt: 100
  pool_deg: 36000

eligibility:
  require_status: ["COMPLETE", "ACCEPTED"]
  require_links_resolved: true
  require_brex_pass_for_pub: true

allocation:
  method: "effort_plus_impact"
  formula: "w_i = α·Ê_i + (1-α)·Î_i; T_i = P_k · w_i"
  params:
    alpha_effort: 0.30
    alpha_impact: 0.70
    lambda_spillover: 0.50
    rounding: "floor_deg"

measurement:
  residual_scale: "0..100"
  required_fields_per_knu:
    - effort_predicted
    - delta_residual_primary
    - delta_residual_adjacent_sum
    - verification_status
    - linked_artifacts

closure_record:
  residual_before: 100
  residual_after: null
  residual_target: 10

Token Distribution Formula

Rewards are distributed using a weighted combination of effort and impact:

w_i = α · Ê_i + (1 - α) · Î_i
T_i = P_k Β· w_i

Where:

Symbol Definition
P_k Pool amount (TT) for the KNOT
Ξ± Effort weight (default: 0.30)
Ê_i Normalized effort: E_i / Σ E_i
Î_i Normalized impact: I_i / Σ I_i
I_i Effective impact: Ξ”R_k,i + Ξ» Β· S_i
S_i Spillover: Σ(a_k→j · ΔR_j,i) for adjacent KNOTs
Ξ» Spillover multiplier (default: 0.50)

This ensures:

  • Contributors who do necessary work are rewarded (effort)
  • Contributors who reduce uncertainty most are rewarded more (impact)
  • Cross-KNOT contributions are recognized (spillover)

5.4 Change Control & Baselines

Baseline Type Trigger Authority Artifacts
Design Baseline PDR/CDR gate STK_SE LC04 frozen
Safety Baseline Safety Review STK_SAF LC03 frozen
Certification Baseline TC Application STK_CERT LC08 frozen
Production Baseline FAI Complete STK_CM LC09/LC10 frozen
Publication Baseline IDB Release STK_CM PUB/CSDB tagged

6. Standards & Compliance

Standard Application
EASA CS-25 / FAA Part 25 Airworthiness requirements framing
ATA iSpec 2200 Chapter/section/subject scaffolding
S1000D Issue 5.0 Technical publications CSDB
DO-178C Software considerations in airborne systems
DO-254 Hardware design assurance
DO-160G Environmental qualification
DO-326A / DO-356A Airborne security
ARP4754A Development of civil aircraft and systems
ARP4761 Safety assessment process
ISO 15926 Industrial data standards
ISO 14001 Environmental management
EU Digital Product Passport Circularity requirements

7. Getting Started

7.1 Prerequisites & Setup

Requirements:

  • Python 3.9+
  • Git 2.30+
  • 2GB disk space (full clone)

Installation:

# Clone repository
git clone https://github.com/AmedeoPelliccia/AMPEL360-AIR-T.git
cd AMPEL360-AIR-T

# Install dependencies
pip install -r requirements.txt

# Setup pre-commit hooks
bash .github/hooks/setup-hooks.sh

# Verify installation
python tools/ci/optin_structure_validator.py --check

7.2 First Contribution Walkthrough

Step 1: Identify or Create a KNOT

# Navigate to target ATA section
cd OPT-IN_FRAMEWORK/T-TECHNOLOGIES_.../C2-CIRCULAR_CRYOGENIC_CELLS/ATA_28-FUEL/

# Check existing KNOTs
cat ATA-28-fuel/28-10-storage/28-10-00-00-general/KDB/GENESIS/KNOTS.csv

Step 2: Plan Your KNU

Add entry to KNU_PLAN.csv:

KNU_ID,KNOT_ID,KNU_Type,Artifact_Class,Expected_Location,Acceptance_Criteria,Owner_AoR,Due_Date,Status,Effort_Predicted
KNU-ATA28-10-00-REQ-005,KNOT-ATA28-10-00-001,REQ,SSOT,../LC02_SYSTEM_REQUIREMENTS/,Requirement traced + reviewed,STK_SE,2026-02-15,PLANNED,3

Step 3: Create the Artifact

# Create requirement document
cd KDB/SSOT/PLM/LC02_SYSTEM_REQUIREMENTS/
touch REQ-ATA28-10-00-005_LH2_Tank_Insulation.md

Step 4: Validate and Submit

# Validate structure
python tools/ci/optin_structure_validator.py --check --chapter 28

# Commit with conventional format
git add .
git commit -m "feat(ATA28): Add LH2 tank insulation requirement

- Addresses KNOT-ATA28-10-00-001
- KNU-ATA28-10-00-REQ-005 now IN_PROGRESS
- Effort: 3 points"

# Push and create PR
git push origin feature/ata28-lh2-insulation

7.3 Role-Based Entry Points

Role Start Here Primary Focus
Systems Engineer OPT-IN_FRAMEWORK/README.md LC02–LC06 artifacts
Safety Engineer LC03_SAFETY_RELIABILITY/ Hazard analysis, FMEA
Certification Engineer LC08_FLIGHT_TEST_CERTIFICATION/ Compliance matrix
Publication Author IDB/PUB/AMM/CSDB/README.md S1000D data modules
Configuration Manager CONTRACTS/ Transformation governance
Program Manager docs/IMPLEMENTATION_SUMMARY.md Status dashboards
MRO Engineer IDB/SSOT/SLM/LC13_MRO_SUSTAINMENT/ Maintenance programs
AI/ML Engineer ATA_95-AI_ML_MODELS/ Model lifecycle
Tokenomics Analyst KDB/GENESIS/TOKENOMICS_TT.yaml Incentive allocation

7.4 Validation & CI Checks

Local Validation:

# Full structure check
python tools/ci/optin_structure_validator.py --check

# Single chapter
python tools/ci/optin_structure_validator.py --check --chapter 28

# BREX validation (requires S1000D tools)
python tools/ci/brex_validator.py --csdb IDB/PUB/AMM/CSDB/

# Trace matrix verification
python tools/ci/trace_checker.py --contracts CONTRACTS/

CI Pipeline (GitHub Actions):

# .github/workflows/validate.yml
name: Validate
on: [push, pull_request]
jobs:
  structure:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-python@v5
        with:
          python-version: '3.11'
      - run: pip install -r requirements.txt
      - run: python tools/ci/optin_structure_validator.py --check
      - run: python tools/ci/trace_checker.py --contracts CONTRACTS/

8. CAOS Framework

CAOS (Continuous Airworthiness for Operational Sustainment) maintains airworthiness throughout the operational lifecycle:

Domain Scope
Continued Airworthiness AD compliance, SB tracking, modification status
Reliability Programs MSG-3, condition monitoring, fleet trends
Operational Feedback In-service data, SDR/MOR analysis
Technical Services Field support, AOG response, technical bulletins
Configuration Control As-maintained vs. as-designed reconciliation

Key Documents:

CAOS artifacts reside in:

  • IDB/SSOT/SLM/LC11_OPERATIONS_CUSTOMIZATION/
  • IDB/SSOT/SLM/LC12_SUPPORT_SERVICES/
  • IDB/SSOT/SLM/LC13_MRO_SUSTAINMENT/

9. Publishing Model

9.1 CSDB (S1000D)

The Common Source Database is the single source for modular publications:

Component Purpose Location
DM Atomic content modules IDB/PUB/AMM/CSDB/DM/
PM Publication structures IDB/PUB/AMM/CSDB/PM/
DML Controlled module lists IDB/PUB/AMM/CSDB/DML/
BREX Business rules IDB/PUB/AMM/CSDB/BREX/
ICN Graphics (SVG preferred) IDB/PUB/AMM/CSDB/ICN/
APPLICABILITY ACT/PCT/CCT filters IDB/PUB/AMM/CSDB/APPLICABILITY/
COMMON Reusable primitives IDB/PUB/AMM/CSDB/COMMON/

Data Module Types:

Info Code Type Description
0XX Descriptive System descriptions
1XX Operational Operating procedures
2XX Servicing Servicing tasks
3XX Maintenance Maintenance procedures
4XX Fault Fault isolation
5XX Disconnect Remove/install
6XX Repair Repair procedures
7XX Illustrated Parts data (IPD)
9XX Wiring Wiring data

9.2 IETP Runtime

The Interactive Electronic Technical Publication runtime:

  • Consumes PM/DM sets from CSDB
  • Applies applicability rules (ACT/PCT/CCT)
  • Provides interactive navigation, search, filtering
  • Packaged in IDB/PUB/AMM/IETP/
IETP/
β”œβ”€β”€ config/
β”‚   β”œβ”€β”€ viewer.json
β”‚   └── applicability.json
β”œβ”€β”€ index/
β”‚   └── search_index.json
β”œβ”€β”€ runtime/
β”‚   └── viewer.js
└── package.json

10. Tooling & Automation

10.1 CLI Tools Reference

Tool Command Description
Structure Validator python tools/ci/optin_structure_validator.py Validates OPT-IN directory structure
BREX Validator python tools/ci/brex_validator.py S1000D business rules check
Trace Checker python tools/ci/trace_checker.py Contract trace matrix verification
Token CLI python tools/tek_tokens.py TT operations (quote, transfer, verify)
KNU Distributor python tools/knu_distribution.py KNOT closure TT distribution

Examples:

# Quote reward distribution
python tools/tek_tokens.py quote --op reward --tt 100

# Execute distribution after KNOT closure
python tools/knu_distribution.py distribute --knot KNOT-ATA28-10-00-001

# Verify ledger integrity
python tools/tek_tokens.py verify

# Generate trace matrix
python tools/ci/trace_checker.py --contracts CONTRACTS/ --output trace_matrix.csv

10.2 ASIT Pipeline Configuration

ASIT pipelines are defined in ASIT/pipelines/:

# pipeline-kdb-to-csdb.yaml
pipeline:
  id: "ASIT-PIPE-001"
  name: "KDB to CSDB"
  contract: "KITDM-CTR-001"

stages:
  - name: "extract"
    type: "kdb_reader"
    config:
      paths: "${CONTRACT.source.paths}"
      maturity_filter: "${CONTRACT.source.required_maturity}"

  - name: "transform"
    type: "dm_generator"
    config:
      rules: "${CONTRACT.transformation.rules}"
      templates: "templates/"

  - name: "validate"
    type: "brex_checker"
    config:
      brex_files: "${CONTRACT.validation.brex_rules}"
      schema: "${CONTRACT.validation.schema_version}"

  - name: "load"
    type: "csdb_writer"
    config:
      output_path: "${CONTRACT.target.output_path}"
      generate_dml: true

  - name: "audit"
    type: "trace_logger"
    config:
      log_level: "${CONTRACT.audit.log_level}"
      output: "runs/${RUN_ID}/"

triggers:
  - type: "manual"
  - type: "schedule"
    cron: "0 2 * * *"
  - type: "webhook"
    events: ["kdb_update"]

10.3 CI/CD Integration

GitHub Actions Workflow:

# .github/workflows/asit-transform.yml
name: ASIT Transform
on:
  push:
    paths:
      - 'OPT-IN_FRAMEWORK/**/KDB/**'
  workflow_dispatch:

jobs:
  transform:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      
      - name: Setup Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.11'
          
      - name: Install dependencies
        run: pip install -r requirements.txt
        
      - name: Validate KDB changes
        run: python tools/ci/optin_structure_validator.py --check
        
      - name: Run ASIT transformation
        run: python tools/asit/runner.py --pipeline pipeline-kdb-to-csdb.yaml
        
      - name: Validate CSDB output
        run: python tools/ci/brex_validator.py --csdb IDB/PUB/AMM/CSDB/
        
      - name: Generate trace matrix
        run: python tools/ci/trace_checker.py --output artifacts/trace_matrix.csv
        
      - name: Upload artifacts
        uses: actions/upload-artifact@v4
        with:
          name: asit-run-${{ github.sha }}
          path: artifacts/

11. Security & Access Control

11.1 Data Classification

Level Label Description Examples
1 PUBLIC Open information README, general descriptions
2 INTERNAL Program-internal Design rationale, trade studies
3 CONFIDENTIAL Business-sensitive Cost data, supplier info
4 RESTRICTED Export-controlled Performance data, algorithms
5 SECRET National security (Not applicable to this repo)

Marking Convention:

<!-- CLASSIFICATION: INTERNAL -->
<!-- EXPORT_CONTROL: NONE -->

11.2 Export Control Considerations

Jurisdiction Regulation Applicability
EU Dual-Use Regulation (EU 2021/821) Aviation technology
US EAR (15 CFR 730-774) US-origin technology
US ITAR (22 CFR 120-130) Defense articles (if applicable)
Intl Wassenaar Arrangement Aerospace technology

Repository Policy:

  • All content in this repository is synthetic demonstration data
  • No export-controlled technical data is included
  • Contributors must not add controlled technical data
  • Real program data requires separate controlled repository

11.3 Role-Based Access Model

Role KDB/GENESIS KDB/SSOT CONTRACTS IDB/SSOT IDB/PUB
Viewer Read Read Read Read Read
Contributor Read Read/Write Read Read Read
Author Read Read/Write Read Read/Write Read/Write
Approver Read Read/Approve Read/Approve Read/Approve Read/Approve
Admin Full Full Full Full Full

Access is controlled by:

  • GitHub repository permissions
  • Branch protection rules
  • CODEOWNERS file
  • CI/CD approval gates

12. Key Documentation

Document Description Location
Ontology & Knowledge Model Foundational methodology docs/ONTOLOGY_GENESIS_KNOWLEDGE_MODEL.md
OPT-IN Framework Standard Complete framework specification docs/OPT-IN_FRAMEWORK_STANDARD.md
Documentation Standard Formatting and structure guidelines docs/AMPEL360_DOCUMENTATION_STANDARD.md
AI→ASI Transition Proposal AI governance roadmap docs/AI-ASI-TP.md
Digital Twin Control Loop Digital twin architecture docs/DIGITAL_TWIN_CONTROL_LOOP.md
CAOS Index Airworthiness framework entry CAOS/CAOS_INDEX.md
CAOS Architecture CAOS system design CAOS/CAOS_ARCHITECTURE.md
CAOS Operations Operational playbook CAOS/CAOS_OPERATIONS_FRAMEWORK.md

13. Contributing

Contribution Workflow

  1. Fork the repository
  2. Setup hooks: bash .github/hooks/setup-hooks.sh
  3. Create branch: git checkout -b feature/ata-XX-description
  4. Follow the canonical ATA pattern (KDB/CONTRACTS/ASIT/IDB)
  5. Validate: python tools/ci/optin_structure_validator.py --check
  6. Commit with conventional format
  7. Submit pull request

Commit Message Convention

<type>(<scope>): <subject>

<body>

<footer>
Type Description
feat New feature or artifact
fix Bug fix or correction
docs Documentation only
refactor Restructuring without functional change
test Test addition or modification
ci CI/CD changes
chore Maintenance tasks

Example:

feat(ATA28): Add LH2 tank thermal analysis

- Addresses KNOT-ATA28-10-00-003
- KNU-ATA28-10-00-ANA-001 complete
- Includes CFD results and validation data

Closes #142

Contribution Rules

Rule Guidance
Narrative docs Use Markdown (.md) β€” not .pdf, .docx
Matrices/logs Use CSV (.csv) β€” not .xlsx
Graphics Prefer SVG for illustrations (ICN)
S1000D content Keep XML/BREX compliant under IDB/PUB/**/CSDB/**
References Ensure DM ↔ ICN ↔ PM ↔ DML ↔ APPLICABILITY resolve
Safety-critical Include DO-178C compliance tags where applicable
KNOT/KNU Define uncertainties in GENESIS before producing artifacts
Tokenomics Declare reward pools in TOKENOMICS_TT.yaml per KNOT
Classification Mark all files with appropriate data classification
No real data This repository is for synthetic demonstration only

14. Glossary

Acronym Full Term Definition
ACT Applicability Cross-reference Table S1000D product configuration mapping
AoR Area of Responsibility Accountable stakeholder domain
ASIT Aircraft Standard Information Transponder Agent executing KDB→IDB transformation contracts
ATA Air Transport Association Industry standard for aircraft system numbering
BREX Business Rules Exchange S1000D validation ruleset
BWB Blended Wing Body Aircraft configuration with integrated wing-fuselage
CAE Computer-Aided Engineering Analysis and simulation tools
CAM Computer-Aided Manufacturing Production and tooling systems
CAOS Continuous Airworthiness for Operational Sustainment In-service airworthiness framework
CCT Condition Cross-reference Table S1000D condition-based filtering
CSDB Common Source Database S1000D repository of modular content
DM Data Module Atomic S1000D content unit
DML Data Module List Controlled list of DMs with status
DMU Digital Mock-Up 3D product definition
DPP Digital Product Passport EU lifecycle traceability record
FMEA Failure Mode and Effects Analysis Safety analysis method
GENESIS β€” Pre-SSOT layer for uncertainty discovery
GSE Ground Support Equipment Airport/maintenance tooling
ICN Information Control Number S1000D graphic identifier
IDB Information Data Base Derived information views
IETP Interactive Electronic Technical Publication Runtime delivery system
KDB Knowledge Data Base Authoritative engineering knowledge
KI-DM Knowledge and Information Data Model Governance architecture
KITDM Knowledge and Information Technical Data Management Implementation framework
KNU Knowledge Unit Concrete artifact addressing a KNOT
KNOT Knowledge Node (Ontology Trading) Registered uncertainty requiring resolution
LC Lifecycle Phase One of 14 managed phases (LC01–LC14)
LH2 Liquid Hydrogen Cryogenic fuel
MRO Maintenance, Repair, Overhaul In-service support activities
O-KNOT Origin KNOT Fundamental/origin uncertainty
OPT-IN Organizations-Programs-Technologies-Infrastructures-Neural Five-axis framework
PCT Product Cross-reference Table S1000D variant mapping
PEM Proton Exchange Membrane Fuel cell type
PLM Product Lifecycle Management Design-through-production scope
PM Publication Module S1000D publication structure
PMU Physical Mock-Up Test and integration articles
RACI Responsible-Accountable-Consulted-Informed Responsibility matrix
S1000D International specification for technical publications XML-based modular documentation
SLM Service Lifecycle Management Operations-through-retirement scope
SSOT Single Source of Truth Authoritative record system
TT Teknia Token Incentive token (1 TT = 360Β°)
V&V Verification and Validation Evidence of compliance
Y-KNOT Justification KNOT Decision rationale trees

15. Changelog

[Unreleased]

Added

  • KI-DM / KITDM / ASIT architecture documentation
  • GENESIS layer with O-KNOT, Y-KNOT, KNOT hierarchy
  • PLM vs SLM lifecycle domain separation
  • Contract-based transformation governance (KITDM-CTR)
  • Security and access control documentation
  • Comprehensive glossary

Changed

  • Restructured canonical ATA pattern to KDB/CONTRACTS/ASIT/IDB
  • Moved LC11–LC14 to IDB/SSOT/SLM (Service Lifecycle Management)
  • Enhanced tokenomics documentation with full formula derivation

[1.0.0] β€” 2026-01-11

Added

  • Initial OPT-IN Framework with 79 ATA chapters
  • SSOT/PUB separation model
  • KNOT/KNU uncertainty management
  • Teknia Token (TT) v3.14 integration
  • CAOS framework documentation
  • S1000D CSDB structure

16. License & Acknowledgments

License

Creative Commons Zero v1.0 Universal (CC0 1.0)

To the extent possible under law, the author has waived all copyright and related or neighboring rights to this work.

See LICENSE for full text.

Acknowledgments

Contributor Role
Amedeo Pelliccia Concept, Direction, Architecture
GitHub Copilot AI-assisted documentation generation
Claude (Anthropic) Technical writing and framework refinement

Disclaimer

All data in this repository is synthetic.

No claim is made regarding:

  • Technical correctness
  • Airworthiness
  • Operational applicability

This repository exists solely to demonstrate governance, traceability, and transformation logic.


AMPEL360 Q100
Digital engineering, traceability, and publication-grade CSDB for sustainable aviation

By Amedeo Pelliccia β€’ AI-Assisted Development

Last updated: 2026-01-19

OPT-IN_FRAMEWORK/
β”œβ”€β”€ README.md
β”œβ”€β”€ 00_INDEX.md
β”‚
β”œβ”€β”€ O-ORGANIZATIONS/                                      # ATA 00–05
β”‚   β”œβ”€β”€ README.md
β”‚   β”œβ”€β”€ 00_INDEX.md
β”‚   β”‚
β”‚   β”œβ”€β”€ ATA_00-GENERAL/
β”‚   β”‚   └── ATA-00-general/
β”‚   β”‚       β”œβ”€β”€ 00-00-general/
β”‚   β”‚       β”œβ”€β”€ 00-10-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 00-20-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 00-30-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 00-40-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 00-50-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 00-60-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 00-70-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 00-80-reserved-as-required/
β”‚   β”‚       └── 00-90-tables-schemas-index/
β”‚   β”‚
β”‚   β”œβ”€β”€ ATA_01-MAINTENANCE_POLICY/
β”‚   β”‚   └── ATA-01-maintenance-policy/
β”‚   β”‚       β”œβ”€β”€ 01-00-general/
β”‚   β”‚       β”œβ”€β”€ 01-10-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 01-20-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 01-30-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 01-40-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 01-50-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 01-60-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 01-70-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 01-80-reserved-as-required/
β”‚   β”‚       └── 01-90-tables-schemas-index/
β”‚   β”‚
β”‚   β”œβ”€β”€ ATA_02-OPERATIONS_ORG/
β”‚   β”‚   └── ATA-02-operations-organization/
β”‚   β”‚       β”œβ”€β”€ 02-00-general/
β”‚   β”‚       β”œβ”€β”€ 02-10-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 02-20-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 02-30-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 02-40-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 02-50-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 02-60-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 02-70-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 02-80-reserved-as-required/
β”‚   β”‚       └── 02-90-tables-schemas-index/
β”‚   β”‚
β”‚   β”œβ”€β”€ ATA_03-SUPPORT_INFORMATION/
β”‚   β”‚   └── ATA-03-support-information/
β”‚   β”‚       β”œβ”€β”€ 03-00-general/
β”‚   β”‚       β”œβ”€β”€ 03-10-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 03-20-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 03-30-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 03-40-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 03-50-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 03-60-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 03-70-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 03-80-reserved-as-required/
β”‚   β”‚       └── 03-90-tables-schemas-index/
β”‚   β”‚
β”‚   β”œβ”€β”€ ATA_04-AIRWORTHINESS_LIMITATIONS/
β”‚   β”‚   └── ATA-04-airworthiness-limitations/
β”‚   β”‚       β”œβ”€β”€ 04-00-general/
β”‚   β”‚       β”œβ”€β”€ 04-10-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 04-20-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 04-30-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 04-40-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 04-50-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 04-60-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 04-70-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 04-80-reserved-as-required/
β”‚   β”‚       └── 04-90-tables-schemas-index/
β”‚   β”‚
β”‚   └── ATA_05-TIME_LIMITS_MAINT_CHECKS/
β”‚       └── ATA-05-time-limits-maintenance-checks/
β”‚           β”œβ”€β”€ 05-00-general/
β”‚           β”œβ”€β”€ 05-10-reserved-as-required/
β”‚           β”œβ”€β”€ 05-20-reserved-as-required/
β”‚           β”œβ”€β”€ 05-30-reserved-as-required/
β”‚           β”œβ”€β”€ 05-40-reserved-as-required/
β”‚           β”œβ”€β”€ 05-50-reserved-as-required/
β”‚           β”œβ”€β”€ 05-60-reserved-as-required/
β”‚           β”œβ”€β”€ 05-70-reserved-as-required/
β”‚           β”œβ”€β”€ 05-80-reserved-as-required/
β”‚           └── 05-90-tables-schemas-index/
β”‚
β”œβ”€β”€ P-PROGRAMS/                                           # ATA 06–12
β”‚   β”œβ”€β”€ README.md
β”‚   β”œβ”€β”€ 00_INDEX.md
β”‚   β”‚
β”‚   β”œβ”€β”€ ATA_06-DIMENSIONS_AND_AREAS/
β”‚   β”‚   └── ATA-06-dimensions-areas/
β”‚   β”‚       β”œβ”€β”€ 06-00-general/
β”‚   β”‚       β”œβ”€β”€ 06-10-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 06-20-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 06-30-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 06-40-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 06-50-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 06-60-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 06-70-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 06-80-reserved-as-required/
β”‚   β”‚       └── 06-90-tables-schemas-index/
β”‚   β”‚
β”‚   β”œβ”€β”€ ATA_07-LIFTING_AND_SHORING/
β”‚   β”‚   └── ATA-07-lifting-shoring/
β”‚   β”‚       β”œβ”€β”€ 07-00-general/
β”‚   β”‚       β”œβ”€β”€ 07-10-jacking/
β”‚   β”‚       β”œβ”€β”€ 07-20-shoring/
β”‚   β”‚       β”œβ”€β”€ 07-30-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 07-40-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 07-50-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 07-60-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 07-70-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 07-80-reserved-as-required/
β”‚   β”‚       └── 07-90-tables-schemas-index/
β”‚   β”‚
β”‚   β”œβ”€β”€ ATA_08-LEVELING_AND_WEIGHING/                      # PROGRAM scope (no overlay with INFRA)
β”‚   β”‚   └── ATA-08-leveling-weighing/
β”‚   β”‚       β”œβ”€β”€ 08-00-general/
β”‚   β”‚       β”œβ”€β”€ 08-10-weighing-balancing/
β”‚   β”‚       └── 08-20-leveling/
β”‚   β”‚
β”‚   β”œβ”€β”€ ATA_09-TOWING_AND_TAXIING/
β”‚   β”‚   └── ATA-09-towing-taxiing/
β”‚   β”‚       β”œβ”€β”€ 09-00-general/
β”‚   β”‚       β”œβ”€β”€ 09-10-towing/
β”‚   β”‚       β”œβ”€β”€ 09-20-taxiing/
β”‚   β”‚       β”œβ”€β”€ 09-30-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 09-40-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 09-50-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 09-60-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 09-70-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 09-80-reserved-as-required/
β”‚   β”‚       └── 09-90-tables-schemas-index/
β”‚   β”‚
β”‚   β”œβ”€β”€ ATA_10-PARKING_MOORING_STORAGE_RETURN_TO_SERVICE/
β”‚   β”‚   └── ATA-10-parking-mooring-storage-rts/
β”‚   β”‚       β”œβ”€β”€ 10-00-general/
β”‚   β”‚       β”œβ”€β”€ 10-10-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 10-20-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 10-30-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 10-40-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 10-50-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 10-60-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 10-70-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 10-80-reserved-as-required/
β”‚   β”‚       └── 10-90-tables-schemas-index/
β”‚   β”‚
β”‚   β”œβ”€β”€ ATA_11-PLACARDS_AND_MARKINGS/
β”‚   β”‚   └── ATA-11-placards-markings/
β”‚   β”‚       β”œβ”€β”€ 11-00-general/
β”‚   β”‚       β”œβ”€β”€ 11-10-exterior-color-schemes-markings/
β”‚   β”‚       β”œβ”€β”€ 11-20-exterior-placards-markings/
β”‚   β”‚       β”œβ”€β”€ 11-30-interior-placards/
β”‚   β”‚       β”œβ”€β”€ 11-40-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 11-50-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 11-60-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 11-70-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 11-80-reserved-as-required/
β”‚   β”‚       └── 11-90-tables-schemas-index/
β”‚   β”‚
β”‚   └── ATA_12-SERVICING/
β”‚       └── ATA-12-servicing/
β”‚           β”œβ”€β”€ 12-00-general/
β”‚           β”œβ”€β”€ 12-10-replenishing/
β”‚           β”œβ”€β”€ 12-20-scheduled-servicing/
β”‚           β”œβ”€β”€ 12-30-unscheduled-servicing/
β”‚           β”œβ”€β”€ 12-40-reserved-as-required/
β”‚           β”œβ”€β”€ 12-50-reserved-as-required/
β”‚           β”œβ”€β”€ 12-60-reserved-as-required/
β”‚           β”œβ”€β”€ 12-70-reserved-as-required/
β”‚           β”œβ”€β”€ 12-80-reserved-as-required/
β”‚           └── 12-90-tables-schemas-index/
β”‚
β”œβ”€β”€ T-TECHNOLOGIES_AMEDEOPELLICCIA-ON_BOARD_SYSTEMS/
β”‚   β”œβ”€β”€ README.md
β”‚   β”œβ”€β”€ 00_INDEX.md
β”‚   β”‚
β”‚   β”œβ”€β”€ A-AIRFRAME_CABINS/
β”‚   β”‚   β”œβ”€β”€ ATA_20-STANDARD_PRACTICES_AIRFRAME/
β”‚   β”‚   β”‚   └── ATA-20-standard-practices-airframe/
β”‚   β”‚   β”‚       β”œβ”€β”€ 20-00-general/
β”‚   β”‚   β”‚       β”œβ”€β”€ 20-10-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 20-20-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 20-30-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 20-40-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 20-50-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 20-60-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 20-70-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 20-80-reserved-as-required/
β”‚   β”‚   β”‚       └── 20-90-reserved-airline-use/
β”‚   β”‚   β”‚
β”‚   β”‚   β”œβ”€β”€ ATA_25-EQUIPMENT_FURNISHINGS/
β”‚   β”‚   β”‚   └── ATA-25-equipment-furnishings/
β”‚   β”‚   β”‚       β”œβ”€β”€ 25-00-general/
β”‚   β”‚   β”‚       β”œβ”€β”€ 25-10-flight-compartment/
β”‚   β”‚   β”‚       β”œβ”€β”€ 25-20-passenger-compartment/
β”‚   β”‚   β”‚       β”œβ”€β”€ 25-30-galley/
β”‚   β”‚   β”‚       β”œβ”€β”€ 25-40-lavatories/
β”‚   β”‚   β”‚       β”œβ”€β”€ 25-50-additional-compartments/
β”‚   β”‚   β”‚       β”œβ”€β”€ 25-60-emergency/
β”‚   β”‚   β”‚       β”œβ”€β”€ 25-70-available/
β”‚   β”‚   β”‚       β”œβ”€β”€ 25-80-insulation/
β”‚   β”‚   β”‚       └── 25-90-tables-schemas-index/
β”‚   β”‚   β”‚
β”‚   β”‚   β”œβ”€β”€ ATA_44-CABIN_SYSTEMS/
β”‚   β”‚   β”‚   └── ATA-44-cabin-systems/
β”‚   β”‚   β”‚       β”œβ”€β”€ 44-00-general/
β”‚   β”‚   β”‚       β”œβ”€β”€ 44-10-cabin-core-system/
β”‚   β”‚   β”‚       β”œβ”€β”€ 44-20-in-flight-entertainment-system/
β”‚   β”‚   β”‚       β”œβ”€β”€ 44-30-external-communication-system/
β”‚   β”‚   β”‚       β”œβ”€β”€ 44-40-cabin-mass-memory-system/
β”‚   β”‚   β”‚       β”œβ”€β”€ 44-50-cabin-monitoring-system/
β”‚   β”‚   β”‚       β”œβ”€β”€ 44-60-miscellaneous-cabin-system/
β”‚   β”‚   β”‚       β”œβ”€β”€ 44-70-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 44-80-reserved-as-required/
β”‚   β”‚   β”‚       └── 44-90-tables-schemas-index/
β”‚   β”‚   β”‚
β”‚   β”‚   β”œβ”€β”€ ATA_50-CARGO_AND_ACCESSORY_COMPARTMENTS/
β”‚   β”‚   β”‚   └── ATA-50-cargo-accessory-compartments/
β”‚   β”‚   β”‚       β”œβ”€β”€ 50-00-general/
β”‚   β”‚   β”‚       β”œβ”€β”€ 50-10-cargo-compartments/
β”‚   β”‚   β”‚       β”œβ”€β”€ 50-20-cargo-loading-systems/
β”‚   β”‚   β”‚       β”œβ”€β”€ 50-30-cargo-related-systems/
β”‚   β”‚   β”‚       β”œβ”€β”€ 50-40-available/
β”‚   β”‚   β”‚       β”œβ”€β”€ 50-50-accessory-compartments/
β”‚   β”‚   β”‚       β”œβ”€β”€ 50-60-insulation/
β”‚   β”‚   β”‚       β”œβ”€β”€ 50-70-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 50-80-reserved-as-required/
β”‚   β”‚   β”‚       └── 50-90-tables-schemas-index/
β”‚   β”‚   β”‚
β”‚   β”‚   β”œβ”€β”€ ATA_51-STANDARD_PRACTICES_GENERAL/
β”‚   β”‚   β”‚   └── ATA-51-standard-practices-general/
β”‚   β”‚   β”‚       β”œβ”€β”€ 51-00-general/
β”‚   β”‚   β”‚       β”œβ”€β”€ 51-10-investigation-cleanup-aero-smoothness/
β”‚   β”‚   β”‚       β”œβ”€β”€ 51-20-processes/
β”‚   β”‚   β”‚       β”œβ”€β”€ 51-30-materials/
β”‚   β”‚   β”‚       β”œβ”€β”€ 51-40-fasteners/
β”‚   β”‚   β”‚       β”œβ”€β”€ 51-50-support-for-repair-alignment-check/
β”‚   β”‚   β”‚       β”œβ”€β”€ 51-60-control-surface-balancing/
β”‚   β”‚   β”‚       β”œβ”€β”€ 51-70-repairs/
β”‚   β”‚   β”‚       β”œβ”€β”€ 51-80-electrical-bonding/
β”‚   β”‚   β”‚       └── 51-90-tables-schemas-index/
β”‚   β”‚   β”‚
β”‚   β”‚   β”œβ”€β”€ ATA_52-DOORS/
β”‚   β”‚   β”‚   └── ATA-52-doors/
β”‚   β”‚   β”‚       β”œβ”€β”€ 52-00-general/
β”‚   β”‚   β”‚       β”œβ”€β”€ 52-10-passenger-crew/
β”‚   β”‚   β”‚       β”œβ”€β”€ 52-20-emergency-exit/
β”‚   β”‚   β”‚       β”œβ”€β”€ 52-30-cargo/
β”‚   β”‚   β”‚       β”œβ”€β”€ 52-40-service/
β”‚   β”‚   β”‚       β”œβ”€β”€ 52-50-fixed-interior/
β”‚   β”‚   β”‚       β”œβ”€β”€ 52-60-entrance-stairs/
β”‚   β”‚   β”‚       β”œβ”€β”€ 52-70-door-warning-monitoring-operation/
β”‚   β”‚   β”‚       β”œβ”€β”€ 52-80-landing-gear/
β”‚   β”‚   β”‚       └── 52-90-tables-schemas-index/
β”‚   β”‚   β”‚
β”‚   β”‚   β”œβ”€β”€ ATA_53-FUSELAGE/
β”‚   β”‚   β”‚   └── ATA-53-fuselage/
β”‚   β”‚   β”‚       β”œβ”€β”€ 53-00-general/
β”‚   β”‚   β”‚       β”œβ”€β”€ 53-10-fuselage-sections-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 53-20-fuselage-sections-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 53-30-fuselage-sections-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 53-40-fuselage-sections-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 53-50-fuselage-sections-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 53-60-fuselage-sections-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 53-70-fuselage-sections-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 53-80-fuselage-sections-as-required/
β”‚   β”‚   β”‚       └── 53-90-tables-schemas-index/
β”‚   β”‚   β”‚
β”‚   β”‚   β”œβ”€β”€ ATA_54-NACELLES_PYLONS/
β”‚   β”‚   β”‚   └── ATA-54-nacelles-pylons/
β”‚   β”‚   β”‚       β”œβ”€β”€ 54-00-general/
β”‚   β”‚   β”‚       β”œβ”€β”€ 54-10-nacelle-sections-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 54-20-nacelle-sections-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 54-30-nacelle-sections-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 54-40-nacelle-sections-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 54-50-pylon-sections-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 54-60-pylon-sections-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 54-70-pylon-sections-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 54-80-pylon-sections-as-required/
β”‚   β”‚   β”‚       └── 54-90-tables-schemas-index/
β”‚   β”‚   β”‚
β”‚   β”‚   β”œβ”€β”€ ATA_55-STABILIZERS/
β”‚   β”‚   β”‚   └── ATA-55-stabilizers/
β”‚   β”‚   β”‚       β”œβ”€β”€ 55-00-general/
β”‚   β”‚   β”‚       β”œβ”€β”€ 55-10-horizontal-stabilizer-or-canard/
β”‚   β”‚   β”‚       β”œβ”€β”€ 55-20-elevator/
β”‚   β”‚   β”‚       β”œβ”€β”€ 55-30-vertical-stabilizer/
β”‚   β”‚   β”‚       β”œβ”€β”€ 55-40-rudder/
β”‚   β”‚   β”‚       β”œβ”€β”€ 55-50-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 55-60-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 55-70-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 55-80-reserved-as-required/
β”‚   β”‚   β”‚       └── 55-90-tables-schemas-index/
β”‚   β”‚   β”‚
β”‚   β”‚   β”œβ”€β”€ ATA_56-WINDOWS/
β”‚   β”‚   β”‚   └── ATA-56-windows/
β”‚   β”‚   β”‚       β”œβ”€β”€ 56-00-general/
β”‚   β”‚   β”‚       β”œβ”€β”€ 56-10-flight-compartment/
β”‚   β”‚   β”‚       β”œβ”€β”€ 56-20-passenger-compartment/
β”‚   β”‚   β”‚       β”œβ”€β”€ 56-30-door/
β”‚   β”‚   β”‚       β”œβ”€β”€ 56-40-inspection-observation/
β”‚   β”‚   β”‚       β”œβ”€β”€ 56-50-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 56-60-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 56-70-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 56-80-reserved-as-required/
β”‚   β”‚   β”‚       └── 56-90-tables-schemas-index/
β”‚   β”‚   β”‚
β”‚   β”‚   └── ATA_57-WINGS/
β”‚   β”‚       └── ATA-57-wings/
β”‚   β”‚           β”œβ”€β”€ 57-00-general/
β”‚   β”‚           β”œβ”€β”€ 57-10-center-wing/
β”‚   β”‚           β”œβ”€β”€ 57-20-outer-wing/
β”‚   β”‚           β”œβ”€β”€ 57-30-wing-tip/
β”‚   β”‚           β”œβ”€β”€ 57-40-leading-edge-and-devices/
β”‚   β”‚           β”œβ”€β”€ 57-50-trailing-edge-and-devices/
β”‚   β”‚           β”œβ”€β”€ 57-60-ailerons-and-elevons/
β”‚   β”‚           β”œβ”€β”€ 57-70-spoilers/
β”‚   β”‚           β”œβ”€β”€ 57-80-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 57-90-wing-folding-system/
β”‚   β”‚           └── 57-95-reserved-as-required/
β”‚   β”‚
β”‚   β”œβ”€β”€ M-MECHANICS/
β”‚   β”‚   β”œβ”€β”€ ATA_27-FLIGHT_CONTROLS/
β”‚   β”‚   β”‚   └── ATA-27-flight-controls/
β”‚   β”‚   β”‚       β”œβ”€β”€ 27-00-general/
β”‚   β”‚   β”‚       β”œβ”€β”€ 27-10-aileron-tab/
β”‚   β”‚   β”‚       β”œβ”€β”€ 27-20-rudder-tab/
β”‚   β”‚   β”‚       β”œβ”€β”€ 27-30-elevator-tab/
β”‚   β”‚   β”‚       β”œβ”€β”€ 27-40-horizontal-stabilizer/
β”‚   β”‚   β”‚       β”œβ”€β”€ 27-50-flaps/
β”‚   β”‚   β”‚       β”œβ”€β”€ 27-60-spoiler-drag-devices-variable-fairings/
β”‚   β”‚   β”‚       β”œβ”€β”€ 27-70-gust-lock-dampener/
β”‚   β”‚   β”‚       β”œβ”€β”€ 27-80-lift-augmenting/
β”‚   β”‚   β”‚       └── 27-90-tables-schemas-index/
β”‚   β”‚   β”‚
β”‚   β”‚   β”œβ”€β”€ ATA_29-HYDRAULIC_POWER/
β”‚   β”‚   β”‚   └── ATA-29-hydraulic-power/
β”‚   β”‚   β”‚       β”œβ”€β”€ 29-00-general/
β”‚   β”‚   β”‚       β”œβ”€β”€ 29-10-main/
β”‚   β”‚   β”‚       β”œβ”€β”€ 29-20-auxiliary/
β”‚   β”‚   β”‚       β”œβ”€β”€ 29-30-indicating/
β”‚   β”‚   β”‚       β”œβ”€β”€ 29-40-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 29-50-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 29-60-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 29-70-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 29-80-reserved-as-required/
β”‚   β”‚   β”‚       └── 29-90-tables-schemas-index/
β”‚   β”‚   β”‚
β”‚   β”‚   └── ATA_32-LANDING_GEAR/
β”‚   β”‚       └── ATA-32-landing-gear/
β”‚   β”‚           β”œβ”€β”€ 32-00-general/
β”‚   β”‚           β”œβ”€β”€ 32-10-main-gear-and-doors/
β”‚   β”‚           β”œβ”€β”€ 32-20-nose-gear-and-doors/
β”‚   β”‚           β”œβ”€β”€ 32-30-extension-and-retraction/
β”‚   β”‚           β”œβ”€β”€ 32-40-wheels-and-brakes/
β”‚   β”‚           β”œβ”€β”€ 32-50-steering/
β”‚   β”‚           β”œβ”€β”€ 32-60-position-and-warning/
β”‚   β”‚           β”œβ”€β”€ 32-70-supplementary-gear/
β”‚   β”‚           β”œβ”€β”€ 32-80-reserved-as-required/
β”‚   β”‚           └── 32-90-tables-schemas-index/
β”‚   β”‚
β”‚   β”œβ”€β”€ E1-ENVIRONMENT/
β”‚   β”‚   β”œβ”€β”€ ATA_21-AIR_CONDITIONING_PRESSURIZATION/
β”‚   β”‚   β”‚   └── ATA-21-air-conditioning/
β”‚   β”‚   β”‚       β”œβ”€β”€ 21-00-general/
β”‚   β”‚   β”‚       β”œβ”€β”€ 21-10-compression/
β”‚   β”‚   β”‚       β”œβ”€β”€ 21-20-distribution/
β”‚   β”‚   β”‚       β”œβ”€β”€ 21-30-pressurization-control/
β”‚   β”‚   β”‚       β”œβ”€β”€ 21-40-heating/
β”‚   β”‚   β”‚       β”œβ”€β”€ 21-50-cooling/
β”‚   β”‚   β”‚       β”œβ”€β”€ 21-60-temperature-control/
β”‚   β”‚   β”‚       β”œβ”€β”€ 21-70-moisture-air-contaminant-control/
β”‚   β”‚   β”‚       β”œβ”€β”€ 21-80-reserved-as-required/
β”‚   β”‚   β”‚       └── 21-90-tables-schemas-index/
β”‚   β”‚   β”‚
β”‚   β”‚   β”œβ”€β”€ ATA_26-FIRE_PROTECTION/
β”‚   β”‚   β”‚   └── ATA-26-fire-protection/
β”‚   β”‚   β”‚       β”œβ”€β”€ 26-00-general/
β”‚   β”‚   β”‚       β”œβ”€β”€ 26-10-detection/
β”‚   β”‚   β”‚       β”œβ”€β”€ 26-20-extinguishing/
β”‚   β”‚   β”‚       β”œβ”€β”€ 26-30-explosion-suppression/
β”‚   β”‚   β”‚       β”œβ”€β”€ 26-40-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 26-50-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 26-60-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 26-70-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 26-80-reserved-as-required/
β”‚   β”‚   β”‚       └── 26-90-tables-schemas-index/
β”‚   β”‚   β”‚
β”‚   β”‚   β”œβ”€β”€ ATA_30-ICE_RAIN_PROTECTION/
β”‚   β”‚   β”‚   └── ATA-30-ice-rain-protection/
β”‚   β”‚   β”‚       β”œβ”€β”€ 30-00-general/
β”‚   β”‚   β”‚       β”œβ”€β”€ 30-10-airfoil/
β”‚   β”‚   β”‚       β”œβ”€β”€ 30-20-air-intakes/
β”‚   β”‚   β”‚       β”œβ”€β”€ 30-30-pitot-and-static/
β”‚   β”‚   β”‚       β”œβ”€β”€ 30-40-windows-windshields-and-doors/
β”‚   β”‚   β”‚       β”œβ”€β”€ 30-50-antennas-and-radomes/
β”‚   β”‚   β”‚       β”œβ”€β”€ 30-60-propellers-rotors/
β”‚   β”‚   β”‚       β”œβ”€β”€ 30-70-water-lines/
β”‚   β”‚   β”‚       β”œβ”€β”€ 30-80-detection/
β”‚   β”‚   β”‚       └── 30-90-tables-schemas-index/
β”‚   β”‚   β”‚
β”‚   β”‚   β”œβ”€β”€ ATA_35-OXYGEN/
β”‚   β”‚   β”‚   └── ATA-35-oxygen/
β”‚   β”‚   β”‚       β”œβ”€β”€ 35-00-general/
β”‚   β”‚   β”‚       β”œβ”€β”€ 35-10-crew/
β”‚   β”‚   β”‚       β”œβ”€β”€ 35-20-passenger/
β”‚   β”‚   β”‚       β”œβ”€β”€ 35-30-portable/
β”‚   β”‚   β”‚       β”œβ”€β”€ 35-40-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 35-50-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 35-60-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 35-70-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 35-80-reserved-as-required/
β”‚   β”‚   β”‚       └── 35-90-tables-schemas-index/
β”‚   β”‚   β”‚
β”‚   β”‚   β”œβ”€β”€ ATA_36-PNEUMATIC/
β”‚   β”‚   β”‚   └── ATA-36-pneumatic/
β”‚   β”‚   β”‚       β”œβ”€β”€ 36-00-general/
β”‚   β”‚   β”‚       β”œβ”€β”€ 36-10-distribution/
β”‚   β”‚   β”‚       β”œβ”€β”€ 36-20-indicating/
β”‚   β”‚   β”‚       β”œβ”€β”€ 36-30-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 36-40-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 36-50-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 36-60-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 36-70-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 36-80-reserved-as-required/
β”‚   β”‚   β”‚       └── 36-90-tables-schemas-index/
β”‚   β”‚   β”‚
β”‚   β”‚   β”œβ”€β”€ ATA_37-VACUUM/
β”‚   β”‚   β”‚   └── ATA-37-vacuum/
β”‚   β”‚   β”‚       β”œβ”€β”€ 37-00-general/
β”‚   β”‚   β”‚       β”œβ”€β”€ 37-10-distribution/
β”‚   β”‚   β”‚       β”œβ”€β”€ 37-20-indicating/
β”‚   β”‚   β”‚       β”œβ”€β”€ 37-30-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 37-40-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 37-50-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 37-60-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 37-70-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 37-80-reserved-as-required/
β”‚   β”‚   β”‚       └── 37-90-tables-schemas-index/
β”‚   β”‚   β”‚
β”‚   β”‚   β”œβ”€β”€ ATA_38-WATER_WASTE/
β”‚   β”‚   β”‚   └── ATA-38-water-waste/
β”‚   β”‚   β”‚       β”œβ”€β”€ 38-00-general/
β”‚   β”‚   β”‚       β”œβ”€β”€ 38-10-potable/
β”‚   β”‚   β”‚       β”œβ”€β”€ 38-20-wash/
β”‚   β”‚   β”‚       β”œβ”€β”€ 38-30-waste-disposal/
β”‚   β”‚   β”‚       β”œβ”€β”€ 38-40-air-supply/
β”‚   β”‚   β”‚       β”œβ”€β”€ 38-50-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 38-60-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 38-70-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 38-80-reserved-as-required/
β”‚   β”‚   β”‚       └── 38-90-tables-schemas-index/
β”‚   β”‚   β”‚
β”‚   β”‚   └── ATA_47-NITROGEN_GENERATION_SYSTEM/
β”‚   β”‚       └── ATA-47-nitrogen-generation/
β”‚   β”‚           β”œβ”€β”€ 47-00-general/
β”‚   β”‚           β”œβ”€β”€ 47-10-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 47-20-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 47-30-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 47-40-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 47-50-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 47-60-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 47-70-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 47-80-reserved-as-required/
β”‚   β”‚           └── 47-90-tables-schemas-index/
β”‚   β”‚
β”‚   β”œβ”€β”€ D-DATA/
β”‚   β”‚   β”œβ”€β”€ ATA_31-INDICATING_RECORDING/
β”‚   β”‚   β”‚   └── ATA-31-indicating-recording/
β”‚   β”‚   β”‚       β”œβ”€β”€ 31-00-general/
β”‚   β”‚   β”‚       β”œβ”€β”€ 31-10-instrument-control-panels/
β”‚   β”‚   β”‚       β”œβ”€β”€ 31-20-independent-instruments/
β”‚   β”‚   β”‚       β”œβ”€β”€ 31-30-recorders/
β”‚   β”‚   β”‚       β”œβ”€β”€ 31-40-central-computers/
β”‚   β”‚   β”‚       β”œβ”€β”€ 31-50-central-warning-systems/
β”‚   β”‚   β”‚       β”œβ”€β”€ 31-60-central-display-systems/
β”‚   β”‚   β”‚       β”œβ”€β”€ 31-70-automatic-data-reporting-systems/
β”‚   β”‚   β”‚       β”œβ”€β”€ 31-80-reserved-as-required/
β”‚   β”‚   β”‚       └── 31-90-tables-schemas-index/
β”‚   β”‚   β”‚
β”‚   β”‚   └── ATA_45-CENTRAL_MAINTENANCE_SYSTEM_CMS/
β”‚   β”‚       └── ATA-45-central-maintenance-system/
β”‚   β”‚           β”œβ”€β”€ 45-00-general/
β”‚   β”‚           β”œβ”€β”€ 45-05-cms-aircraft-general/
β”‚   β”‚           β”œβ”€β”€ 45-10-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 45-20-cms-airframe-systems/
β”‚   β”‚           β”œβ”€β”€ 45-30-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 45-40-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 45-45-central-maintenance-system/
β”‚   β”‚           β”œβ”€β”€ 45-50-cms-structures/
β”‚   β”‚           β”œβ”€β”€ 45-60-cms-propellers/
β”‚   β”‚           β”œβ”€β”€ 45-70-cms-power-plant/
β”‚   β”‚           β”œβ”€β”€ 45-80-reserved-as-required/
β”‚   β”‚           └── 45-90-tables-schemas-index/
β”‚   β”‚
β”‚   β”œβ”€β”€ I-INFORMATION/                                     # ATA 46 moved here
β”‚   β”‚   β”œβ”€β”€ README.md
β”‚   β”‚   β”œβ”€β”€ 00_INDEX.md
β”‚   β”‚   β”œβ”€β”€ 00-00-general/
β”‚   β”‚   └── ATA_46-INFORMATION_SYSTEMS/
β”‚   β”‚       └── ATA-46-information-systems/
β”‚   β”‚           β”œβ”€β”€ 46-00-general/
β”‚   β”‚           β”œβ”€β”€ 46-10-airplane-general-information-systems/
β”‚   β”‚           β”œβ”€β”€ 46-20-flight-deck-information-systems/
β”‚   β”‚           β”œβ”€β”€ 46-30-maintenance-information-systems/
β”‚   β”‚           β”œβ”€β”€ 46-40-passenger-cabin-information-systems/
β”‚   β”‚           β”œβ”€β”€ 46-50-miscellaneous-information-systems/
β”‚   β”‚           β”œβ”€β”€ 46-60-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 46-70-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 46-80-reserved-as-required/
β”‚   β”‚           └── 46-90-tables-schemas-index/
β”‚   β”‚
β”‚   β”œβ”€β”€ E2-ENERGY/
β”‚   β”‚   β”œβ”€β”€ ATA_24-ELECTRICAL_POWER/
β”‚   β”‚   β”‚   └── ATA-24-electrical-power/
β”‚   β”‚   β”‚       β”œβ”€β”€ 24-00-general/
β”‚   β”‚   β”‚       β”œβ”€β”€ 24-10-generator-drive/
β”‚   β”‚   β”‚       β”œβ”€β”€ 24-20-ac-generation/
β”‚   β”‚   β”‚       β”œβ”€β”€ 24-30-dc-generation/
β”‚   β”‚   β”‚       β”œβ”€β”€ 24-40-external-power/
β”‚   β”‚   β”‚       β”œβ”€β”€ 24-50-ac-load-distribution/
β”‚   β”‚   β”‚       β”œβ”€β”€ 24-60-dc-load-distribution/
β”‚   β”‚   β”‚       β”œβ”€β”€ 24-70-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 24-80-reserved-as-required/
β”‚   β”‚   β”‚       └── 24-90-tables-schemas-index/
β”‚   β”‚   β”‚
β”‚   β”‚   └── ATA_49-AIRBORNE_AUXILIARY_POWER_APU/
β”‚   β”‚       └── ATA-49-airborne-auxiliary-power/
β”‚   β”‚           β”œβ”€β”€ 49-00-general/
β”‚   β”‚           β”œβ”€β”€ 49-10-power-plant/
β”‚   β”‚           β”œβ”€β”€ 49-20-engine/
β”‚   β”‚           β”œβ”€β”€ 49-30-engine-fuel-and-control/
β”‚   β”‚           β”œβ”€β”€ 49-40-ignition-starting/
β”‚   β”‚           β”œβ”€β”€ 49-50-air/
β”‚   β”‚           β”œβ”€β”€ 49-60-engine-controls/
β”‚   β”‚           β”œβ”€β”€ 49-70-indicating/
β”‚   β”‚           β”œβ”€β”€ 49-80-exhaust/
β”‚   β”‚           └── 49-90-oil/
β”‚   β”‚
β”‚   β”œβ”€β”€ E3-ELECTRICS/
β”‚   β”‚   β”œβ”€β”€ ATA_33-LIGHTS/
β”‚   β”‚   β”‚   └── ATA-33-lights/
β”‚   β”‚   β”‚       β”œβ”€β”€ 33-00-general/
β”‚   β”‚   β”‚       β”œβ”€β”€ 33-10-flight-compartment/
β”‚   β”‚   β”‚       β”œβ”€β”€ 33-20-passenger-compartment/
β”‚   β”‚   β”‚       β”œβ”€β”€ 33-30-cargo-and-service-compartments/
β”‚   β”‚   β”‚       β”œβ”€β”€ 33-40-exterior/
β”‚   β”‚   β”‚       β”œβ”€β”€ 33-50-emergency-lighting/
β”‚   β”‚   β”‚       β”œβ”€β”€ 33-60-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 33-70-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 33-80-reserved-as-required/
β”‚   β”‚   β”‚       └── 33-90-tables-schemas-index/
β”‚   β”‚   β”‚
β”‚   β”‚   └── ATA_39-ELECTRICAL_ELECTRONIC_PANELS_MULTIPURPOSE_COMPONENTS/
β”‚   β”‚       └── ATA-39-electrical-electronic-panels-components/
β”‚   β”‚           β”œβ”€β”€ 39-00-general/
β”‚   β”‚           β”œβ”€β”€ 39-10-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 39-20-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 39-30-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 39-40-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 39-50-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 39-60-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 39-70-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 39-80-reserved-as-required/
β”‚   β”‚           └── 39-90-tables-schemas-index/
β”‚   β”‚
β”‚   β”œβ”€β”€ L1-LOGICS/                                         # RESERVED ONLY
β”‚   β”‚   β”œβ”€β”€ README.md
β”‚   β”‚   β”œβ”€β”€ 00_INDEX.md
β”‚   β”‚   └── 00_RESERVED_AS_REQUIRED/
β”‚   β”‚       β”œβ”€β”€ 00-00-general/
β”‚   β”‚       └── 00-90-tables-schemas-index/
β”‚   β”‚
β”‚   β”œβ”€β”€ L2-LINKS/
β”‚   β”‚   └── ATA_34-NAVIGATION/
β”‚   β”‚       └── ATA-34-navigation/
β”‚   β”‚           β”œβ”€β”€ 34-00-general/
β”‚   β”‚           β”œβ”€β”€ 34-10-flight-environment-data/
β”‚   β”‚           β”œβ”€β”€ 34-20-attitude-and-direction/
β”‚   β”‚           β”œβ”€β”€ 34-30-landing-and-taxiing-aids/
β”‚   β”‚           β”œβ”€β”€ 34-40-independent-position-determining/
β”‚   β”‚           β”œβ”€β”€ 34-50-dependent-position-determining/
β”‚   β”‚           β”œβ”€β”€ 34-60-flight-management-computing/
β”‚   β”‚           β”œβ”€β”€ 34-70-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 34-80-reserved-as-required/
β”‚   β”‚           └── 34-90-tables-schemas-index/
β”‚   β”‚
β”‚   β”œβ”€β”€ C1-COMMS/
β”‚   β”‚   └── ATA_23-COMMUNICATIONS/
β”‚   β”‚       └── ATA-23-communications/
β”‚   β”‚           β”œβ”€β”€ 23-00-general/
β”‚   β”‚           β”œβ”€β”€ 23-10-speech-communications/
β”‚   β”‚           β”œβ”€β”€ 23-15-satcom/
β”‚   β”‚           β”œβ”€β”€ 23-20-data-transmission-auto-calling/
β”‚   β”‚           β”œβ”€β”€ 23-30-comfort/
β”‚   β”‚           β”œβ”€β”€ 23-40-interphone/
β”‚   β”‚           β”œβ”€β”€ 23-50-audio-integrating/
β”‚   β”‚           β”œβ”€β”€ 23-60-static-discharging/
β”‚   β”‚           β”œβ”€β”€ 23-70-audio-video-monitoring/
β”‚   β”‚           β”œβ”€β”€ 23-80-integrated-automatic/
β”‚   β”‚           └── 23-90-tables-schemas-index/
β”‚   β”‚
β”‚   β”œβ”€β”€ C2-CIRCULAR_CRYOGENIC_CELLS/
β”‚   β”‚   └── ATA_28-FUEL/
β”‚   β”‚       └── ATA-28-fuel/
β”‚   β”‚           β”œβ”€β”€ 28-00-general/
β”‚   β”‚           β”œβ”€β”€ 28-10-storage/
β”‚   β”‚           β”œβ”€β”€ 28-20-distribution/
β”‚   β”‚           β”œβ”€β”€ 28-30-dump/
β”‚   β”‚           β”œβ”€β”€ 28-40-indicating/
β”‚   β”‚           β”œβ”€β”€ 28-50-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 28-60-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 28-70-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 28-80-reserved-as-required/
β”‚   β”‚           └── 28-90-tables-schemas-index/
β”‚   β”‚
β”‚   β”œβ”€β”€ I2-INTELLIGENCE/                                   # ATA 95 + 97 moved here
β”‚   β”‚   β”œβ”€β”€ README.md
β”‚   β”‚   β”œβ”€β”€ 00_INDEX.md
β”‚   β”‚   β”œβ”€β”€ 00-00-general/
β”‚   β”‚   β”œβ”€β”€ ATA_95-AI_ML_MODELS/
β”‚   β”‚   β”‚   └── ATA-95-ai-ml-models/
β”‚   β”‚   β”‚       β”œβ”€β”€ 95-00-general/
β”‚   β”‚   β”‚       β”œβ”€β”€ 95-10-model-requirements-and-safety-intent/
β”‚   β”‚   β”‚       β”œβ”€β”€ 95-20-training-and-tuning/
β”‚   β”‚   β”‚       β”œβ”€β”€ 95-30-verification-and-validation/
β”‚   β”‚   β”‚       β”œβ”€β”€ 95-40-deployment-runtime-and-inference/
β”‚   β”‚   β”‚       β”œβ”€β”€ 95-50-monitoring-drift-and-health/
β”‚   β”‚   β”‚       β”œβ”€β”€ 95-60-data-interfaces-and-buses/
β”‚   β”‚   β”‚       β”œβ”€β”€ 95-70-toolchain-ci-and-reproducibility/
β”‚   β”‚   β”‚       β”œβ”€β”€ 95-80-reserved-as-required/
β”‚   β”‚   β”‚       └── 95-90-tables-schemas-index/
β”‚   β”‚   β”‚
β”‚   β”‚   └── ATA_97-SYNTHETIC_DATA_VALIDATION/
β”‚   β”‚       └── ATA-97-synthetic-data-validation/
β”‚   β”‚           β”œβ”€β”€ 97-00-general/
β”‚   β”‚           β”œβ”€β”€ 97-10-synthetic-data-generation/
β”‚   β”‚           β”œβ”€β”€ 97-20-scenario-coverage-and-edge-cases/
β”‚   β”‚           β”œβ”€β”€ 97-30-labeling-truth-and-oracles/
β”‚   β”‚           β”œβ”€β”€ 97-40-quality-metrics-and-bias-checks/
β”‚   β”‚           β”œβ”€β”€ 97-50-validation-protocols-and-evidence/
β”‚   β”‚           β”œβ”€β”€ 97-60-data-packaging-and-release/
β”‚   β”‚           β”œβ”€β”€ 97-70-tooling-automation-ci/
β”‚   β”‚           β”œβ”€β”€ 97-80-reserved-as-required/
β”‚   β”‚           └── 97-90-tables-schemas-index/
β”‚   β”‚
β”‚   β”œβ”€β”€ A2-AVIONICS/
β”‚   β”‚   β”œβ”€β”€ ATA_22-AUTO_FLIGHT/
β”‚   β”‚   β”‚   └── ATA-22-auto-flight/
β”‚   β”‚   β”‚       β”œβ”€β”€ 22-00-general/
β”‚   β”‚   β”‚       β”œβ”€β”€ 22-10-autopilot/
β”‚   β”‚   β”‚       β”œβ”€β”€ 22-20-speed-attitude-correction/
β”‚   β”‚   β”‚       β”œβ”€β”€ 22-30-auto-throttle/
β”‚   β”‚   β”‚       β”œβ”€β”€ 22-40-system-monitors/
β”‚   β”‚   β”‚       β”œβ”€β”€ 22-50-aerodynamic-load-alleviating/
β”‚   β”‚   β”‚       β”œβ”€β”€ 22-60-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 22-70-reserved-as-required/
β”‚   β”‚   β”‚       β”œβ”€β”€ 22-80-reserved-as-required/
β”‚   β”‚   β”‚       └── 22-90-tables-schemas-index/
β”‚   β”‚   β”‚
β”‚   β”‚   └── ATA_42-INTEGRATED_MODULAR_AVIONICS/
β”‚   β”‚       └── ATA-42-integrated-modular-avionics/
β”‚   β”‚           β”œβ”€β”€ 42-00-general/
β”‚   β”‚           β”œβ”€β”€ 42-10-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 42-20-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 42-30-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 42-40-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 42-50-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 42-60-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 42-70-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 42-80-reserved-as-required/
β”‚   β”‚           └── 42-90-tables-schemas-index/
β”‚   β”‚
β”‚   β”œβ”€β”€ O-OPERATING_SYSTEMS/
β”‚   β”‚   └── ATA_40-MULTISYSTEM/
β”‚   β”‚       └── ATA-40-multisystem/
β”‚   β”‚           β”œβ”€β”€ 40-00-general/
β”‚   β”‚           β”œβ”€β”€ 40-10-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 40-20-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 40-30-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 40-40-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 40-50-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 40-60-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 40-70-reserved-as-required/
β”‚   β”‚           β”œβ”€β”€ 40-80-reserved-as-required/
β”‚   β”‚           └── 40-90-tables-schemas-index/
β”‚   β”‚
β”‚   └── P-PROPULSION/
β”‚       β”œβ”€β”€ ATA_60-STANDARD_PRACTICES_PROPELLER_ROTOR/
β”‚       β”‚   └── ATA-60-standard-practices-prop-rotor/
β”‚       β”‚       β”œβ”€β”€ 60-00-general/
β”‚       β”‚       β”œβ”€β”€ 60-10-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 60-20-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 60-30-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 60-40-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 60-50-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 60-60-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 60-70-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 60-80-reserved-as-required/
β”‚       β”‚       └── 60-90-tables-schemas-index/
β”‚       β”‚
β”‚       β”œβ”€β”€ ATA_61-PROPELLERS_PROPULSORS/
β”‚       β”‚   └── ATA-61-propellers-propulsors/
β”‚       β”‚       β”œβ”€β”€ 61-00-general/
β”‚       β”‚       β”œβ”€β”€ 61-10-propeller-assembly/
β”‚       β”‚       β”œβ”€β”€ 61-20-controlling/
β”‚       β”‚       β”œβ”€β”€ 61-30-braking/
β”‚       β”‚       β”œβ”€β”€ 61-40-indicating/
β”‚       β”‚       β”œβ”€β”€ 61-50-propulsor-duct/
β”‚       β”‚       β”œβ”€β”€ 61-60-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 61-70-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 61-80-reserved-as-required/
β”‚       β”‚       └── 61-90-tables-schemas-index/
β”‚       β”‚
β”‚       β”œβ”€β”€ ATA_71-POWER_PLANT/
β”‚       β”‚   └── ATA-71-power-plant/
β”‚       β”‚       β”œβ”€β”€ 71-00-general/
β”‚       β”‚       β”œβ”€β”€ 71-10-cowling/
β”‚       β”‚       β”œβ”€β”€ 71-20-mounts/
β”‚       β”‚       β”œβ”€β”€ 71-30-fire-seals/
β”‚       β”‚       β”œβ”€β”€ 71-40-attach-fittings/
β”‚       β”‚       β”œβ”€β”€ 71-50-electrical-harness/
β”‚       β”‚       β”œβ”€β”€ 71-60-air-intakes/
β”‚       β”‚       β”œβ”€β”€ 71-70-engine-drains/
β”‚       β”‚       β”œβ”€β”€ 71-80-reserved-as-required/
β”‚       β”‚       └── 71-90-tables-schemas-index/
β”‚       β”‚
β”‚       β”œβ”€β”€ ATA_72-ENGINE_TURBINE_TURBOPROP_DUCTED_UNDUCTED_FAN/
β”‚       β”‚   └── ATA-72-engine/
β”‚       β”‚       β”œβ”€β”€ 72-00-general/
β”‚       β”‚       β”œβ”€β”€ 72-10-reduction-gear-shaft-section/
β”‚       β”‚       β”œβ”€β”€ 72-20-air-inlet-section/
β”‚       β”‚       β”œβ”€β”€ 72-30-compressor-section/
β”‚       β”‚       β”œβ”€β”€ 72-40-combustion-section/
β”‚       β”‚       β”œβ”€β”€ 72-50-turbine-section/
β”‚       β”‚       β”œβ”€β”€ 72-60-accessory-drives/
β”‚       β”‚       β”œβ”€β”€ 72-70-by-pass-section/
β”‚       β”‚       β”œβ”€β”€ 72-80-propulsor-section-rear-mounted/
β”‚       β”‚       └── 72-90-tables-schemas-index/
β”‚       β”‚
β”‚       β”œβ”€β”€ ATA_73-ENGINE_FUEL_AND_CONTROL/
β”‚       β”‚   └── ATA-73-engine-fuel-control/
β”‚       β”‚       β”œβ”€β”€ 73-00-general/
β”‚       β”‚       β”œβ”€β”€ 73-10-distribution/
β”‚       β”‚       β”œβ”€β”€ 73-20-controlling/
β”‚       β”‚       β”œβ”€β”€ 73-30-indicating/
β”‚       β”‚       β”œβ”€β”€ 73-40-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 73-50-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 73-60-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 73-70-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 73-80-reserved-as-required/
β”‚       β”‚       └── 73-90-tables-schemas-index/
β”‚       β”‚
β”‚       β”œβ”€β”€ ATA_74-IGNITION/
β”‚       β”‚   └── ATA-74-ignition/
β”‚       β”‚       β”œβ”€β”€ 74-00-general/
β”‚       β”‚       β”œβ”€β”€ 74-10-electrical-power-supply/
β”‚       β”‚       β”œβ”€β”€ 74-20-distribution/
β”‚       β”‚       β”œβ”€β”€ 74-30-switching/
β”‚       β”‚       β”œβ”€β”€ 74-40-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 74-50-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 74-60-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 74-70-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 74-80-reserved-as-required/
β”‚       β”‚       └── 74-90-tables-schemas-index/
β”‚       β”‚
β”‚       β”œβ”€β”€ ATA_75-AIR/
β”‚       β”‚   └── ATA-75-air/
β”‚       β”‚       β”œβ”€β”€ 75-00-general/
β”‚       β”‚       β”œβ”€β”€ 75-10-engine-anti-icing/
β”‚       β”‚       β”œβ”€β”€ 75-20-cooling/
β”‚       β”‚       β”œβ”€β”€ 75-30-compressor-control/
β”‚       β”‚       β”œβ”€β”€ 75-40-indicating/
β”‚       β”‚       β”œβ”€β”€ 75-50-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 75-60-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 75-70-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 75-80-reserved-as-required/
β”‚       β”‚       └── 75-90-tables-schemas-index/
β”‚       β”‚
β”‚       β”œβ”€β”€ ATA_76-ENGINE_CONTROLS/
β”‚       β”‚   └── ATA-76-engine-controls/
β”‚       β”‚       β”œβ”€β”€ 76-00-general/
β”‚       β”‚       β”œβ”€β”€ 76-10-power-control/
β”‚       β”‚       β”œβ”€β”€ 76-20-emergency-shutdown/
β”‚       β”‚       β”œβ”€β”€ 76-30-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 76-40-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 76-50-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 76-60-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 76-70-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 76-80-reserved-as-required/
β”‚       β”‚       └── 76-90-tables-schemas-index/
β”‚       β”‚
β”‚       β”œβ”€β”€ ATA_77-ENGINE_INDICATING/
β”‚       β”‚   └── ATA-77-engine-indicating/
β”‚       β”‚       β”œβ”€β”€ 77-00-general/
β”‚       β”‚       β”œβ”€β”€ 77-10-power/
β”‚       β”‚       β”œβ”€β”€ 77-20-temperature/
β”‚       β”‚       β”œβ”€β”€ 77-30-analyzers/
β”‚       β”‚       β”œβ”€β”€ 77-40-integrated-engine-instrument-systems/
β”‚       β”‚       β”œβ”€β”€ 77-50-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 77-60-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 77-70-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 77-80-reserved-as-required/
β”‚       β”‚       └── 77-90-tables-schemas-index/
β”‚       β”‚
β”‚       β”œβ”€β”€ ATA_78-EXHAUST/
β”‚       β”‚   └── ATA-78-exhaust/
β”‚       β”‚       β”œβ”€β”€ 78-00-general/
β”‚       β”‚       β”œβ”€β”€ 78-10-collector-nozzle/
β”‚       β”‚       β”œβ”€β”€ 78-20-noise-suppressor/
β”‚       β”‚       β”œβ”€β”€ 78-30-thrust-reverser/
β”‚       β”‚       β”œβ”€β”€ 78-40-supplementary-air/
β”‚       β”‚       β”œβ”€β”€ 78-50-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 78-60-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 78-70-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 78-80-reserved-as-required/
β”‚       β”‚       └── 78-90-tables-schemas-index/
β”‚       β”‚
β”‚       β”œβ”€β”€ ATA_79-OIL/
β”‚       β”‚   └── ATA-79-oil/
β”‚       β”‚       β”œβ”€β”€ 79-00-general/
β”‚       β”‚       β”œβ”€β”€ 79-10-storage/
β”‚       β”‚       β”œβ”€β”€ 79-20-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 79-30-indicating/
β”‚       β”‚       β”œβ”€β”€ 79-40-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 79-50-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 79-60-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 79-70-reserved-as-required/
β”‚       β”‚       β”œβ”€β”€ 79-80-reserved-as-required/
β”‚       β”‚       └── 79-90-tables-schemas-index/
β”‚       β”‚
β”‚       └── ATA_80-STARTING/
β”‚           └── ATA-80-starting/
β”‚               β”œβ”€β”€ 80-00-general/
β”‚               β”œβ”€β”€ 80-10-cranking/
β”‚               β”œβ”€β”€ 80-20-reserved-as-required/
β”‚               β”œβ”€β”€ 80-30-reserved-as-required/
β”‚               β”œβ”€β”€ 80-40-reserved-as-required/
β”‚               β”œβ”€β”€ 80-50-reserved-as-required/
β”‚               β”œβ”€β”€ 80-60-reserved-as-required/
β”‚               β”œβ”€β”€ 80-70-reserved-as-required/
β”‚               β”œβ”€β”€ 80-80-reserved-as-required/
β”‚               └── 80-90-tables-schemas-index/
β”‚
β”œβ”€β”€ I-INFRASTRUCTURES/                                     # Ground support / Hβ‚‚ logistics / facilities
β”‚   β”œβ”€β”€ README.md
β”‚   β”œβ”€β”€ 00_INDEX.md
β”‚   β”‚
β”‚   β”œβ”€β”€ ATA_03-SUPPORT_INFRA/
β”‚   β”‚   └── ATA-03-support-infra/
β”‚   β”‚       β”œβ”€β”€ 03-00-general/
β”‚   β”‚       β”œβ”€β”€ 03-10-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 03-20-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 03-30-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 03-40-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 03-50-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 03-60-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 03-70-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 03-80-reserved-as-required/
β”‚   β”‚       └── 03-90-tables-schemas-index/
β”‚   β”‚
β”‚   β”œβ”€β”€ ATA_08-LEVELING_AND_WEIGHING_INFRA/                 # complementary only (not in P-PROGRAMS)
β”‚   β”‚   └── ATA-08-leveling-weighing-infra/
β”‚   β”‚       β”œβ”€β”€ 08-30-gse-equipment-and-tooling/
β”‚   β”‚       β”œβ”€β”€ 08-40-metrology-calibration-and-certificates/
β”‚   β”‚       β”œβ”€β”€ 08-50-facility-readiness-layout-and-utilities/
β”‚   β”‚       β”œβ”€β”€ 08-60-safety-zoning-permits-and-emergency/
β”‚   β”‚       β”œβ”€β”€ 08-70-training-competency-and-authorization/
β”‚   β”‚       β”œβ”€β”€ 08-80-digital-logs-traceability-and-data-exports/
β”‚   β”‚       └── 08-90-tables-schemas-index/
β”‚   β”‚
β”‚   β”œβ”€β”€ ATA_10-PARKING_MOORING_STORAGE_RTS_INFRA/
β”‚   β”‚   └── ATA-10-parking-mooring-storage-rts-infra/
β”‚   β”‚       β”œβ”€β”€ 10-00-general/
β”‚   β”‚       β”œβ”€β”€ 10-10-parking-and-storage-facilities/
β”‚   β”‚       β”œβ”€β”€ 10-20-mooring-tie-down-and-stands/
β”‚   β”‚       β”œβ”€β”€ 10-30-return-to-service-enablement/
β”‚   β”‚       β”œβ”€β”€ 10-40-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 10-50-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 10-60-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 10-70-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 10-80-reserved-as-required/
β”‚   β”‚       └── 10-90-tables-schemas-index/
β”‚   β”‚
β”‚   β”œβ”€β”€ ATA_12-SERVICING_INFRA/
β”‚   β”‚   └── ATA-12-servicing-infra/
β”‚   β”‚       β”œβ”€β”€ 12-00-general/
β”‚   β”‚       β”œβ”€β”€ 12-10-replenishing-equipment-and-points/
β”‚   β”‚       β”œβ”€β”€ 12-20-scheduled-servicing-enablement/
β”‚   β”‚       β”œβ”€β”€ 12-30-unscheduled-servicing-enablement/
β”‚   β”‚       β”œβ”€β”€ 12-40-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 12-50-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 12-60-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 12-70-reserved-as-required/
β”‚   β”‚       β”œβ”€β”€ 12-80-reserved-as-required/
β”‚   β”‚       └── 12-90-tables-schemas-index/
β”‚   β”‚
β”‚   β”œβ”€β”€ ATA_85-FUEL_CELL_SYSTEMS_INFRA/                     # enablement only (rigs/facilities/training/data)
β”‚   β”‚   └── ATA-85-fuel-cell-systems-infra/
β”‚   β”‚       β”œβ”€β”€ 85-00-general/
β”‚   β”‚       β”œβ”€β”€ 85-10-test-rigs-and-bench-infrastructure/
β”‚   β”‚       β”œβ”€β”€ 85-20-h2-handling-safety-permits-for-fcs/
β”‚   β”‚       β”œβ”€β”€ 85-30-power-interface-racks-load-banks/
β”‚   β”‚       β”œβ”€β”€ 85-40-thermal-management-test-support-equipment/
β”‚   β”‚       β”œβ”€β”€ 85-50-maintenance-support-tooling-and-gse/
β”‚   β”‚       β”œβ”€β”€ 85-60-spares-repair-warehouse-enablement/
β”‚   β”‚       β”œβ”€β”€ 85-70-training-qualification-and-cert-support/
β”‚   β”‚       β”œβ”€β”€ 85-80-digital-traceability-dpp-and-data-exports/
β”‚   β”‚       └── 85-90-tables-schemas-index/
β”‚   β”‚
β”‚   └── ATA_IN_H2_GSE_AND_SUPPLY_CHAIN/                     # non-ATA infra namespace using IN-XX pattern
β”‚       └── ATA-IN-h2-gse-supply-chain/
β”‚           β”œβ”€β”€ IN-00-general/
β”‚           β”œβ”€β”€ IN-10-h2-production-and-sourcing/
β”‚           β”œβ”€β”€ IN-20-liquefaction-compression-and-storage/
β”‚           β”œβ”€β”€ IN-30-transport-logistics-and-delivery/
β”‚           β”œβ”€β”€ IN-40-airport-facilities-civil-works-and-permits/
β”‚           β”œβ”€β”€ IN-50-h2-gse-couplings-hoses-interfaces/
β”‚           β”œβ”€β”€ IN-60-safety-zoning-emergency-response/
β”‚           β”œβ”€β”€ IN-70-quality-assurance-sampling-and-metering/
β”‚           β”œβ”€β”€ IN-80-digital-traceability-dpp-and-audit/
β”‚           └── IN-90-tables-schemas-index/
β”‚
└── N-NEURAL_NETWORKS/                                     # governance + ledger (transversal)
    β”œβ”€β”€ README.md
    β”œβ”€β”€ 00_INDEX.md
    β”‚
    β”œβ”€β”€ ATA_96-TRACEABILITY_DPP_LEDGER/
    β”‚   └── ATA-96-traceability-dpp-ledger/
    β”‚       β”œβ”€β”€ 96-00-general/
    β”‚       β”œβ”€β”€ 96-10-identifier-grammar-namespaces/
    β”‚       β”œβ”€β”€ 96-20-schema-registry-and-canonical-models/
    β”‚       β”œβ”€β”€ 96-30-ledger-anchoring-hash-chain/
    β”‚       β”œβ”€β”€ 96-40-dpp-sbom-and-config-effectivity/
    β”‚       β”œβ”€β”€ 96-50-audit-evidence-packs-and-signoffs/
    β”‚       β”œβ”€β”€ 96-60-export-publishing-contracts/
    β”‚       β”œβ”€β”€ 96-70-governance-policies-and-rules/
    β”‚       β”œβ”€β”€ 96-80-security-privacy-and-access-control/
    β”‚       └── 96-90-tables-schemas-index/
    β”‚
    └── ATA_98-RESERVED_PROGRAM_SLOT/
        └── ATA-98-program-slot/
            β”œβ”€β”€ 98-00-general/
            β”œβ”€β”€ 98-10-reserved-as-required/
            β”œβ”€β”€ 98-20-reserved-as-required/
            β”œβ”€β”€ 98-30-reserved-as-required/
            β”œβ”€β”€ 98-40-reserved-as-required/
            β”œβ”€β”€ 98-50-reserved-as-required/
            β”œβ”€β”€ 98-60-reserved-as-required/
            β”œβ”€β”€ 98-70-reserved-as-required/
            β”œβ”€β”€ 98-80-reserved-as-required/
            └── 98-90-tables-schemas-index/

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