faa-8110-49 pack: content licence ================================= This pack adapts the sibling prototype build and re-vets, below, the four documents of the 2026-10-12 FAA source pin, rows S1 to S4 as in the sibling build. Their landing-page URLs are held in the sibling build record dated 2026-09-25 and are not reproduced here; the repository link policy bans source-material hosts (see ../../docs/LICENSING.md). Source licence: Public Domain (US Government work, 17 U.S.C. § 105) (tier 1; see ../../docs/SOURCE-VETTING.md). No source-material download link is published. All four sources are works of the United States Government prepared by FAA staff of the Aircraft Certification Service (AIR), and are NOT subject to copyright protection in the United States (17 U.S.C. § 105). They are in the public domain: anyone may reproduce, transform, and redistribute them for any purpose, including commercially, without permission and without any attribution or share-alike obligation. Attribution to the FAA is provided as a courtesy (see the repository NOTICE), not as a legal obligation. The FAA does not endorse this pack or its authors. Each source below carries a vetting block: exact title, publisher office, pinned date, status, cancellation, licence basis, what the pack reconstructs from it, and the chapters that use it. Items marked "confirmed from PDF" were checked against the local source-text captures on 2026-09-25. Reconstruction: all pack content is synthesized reference notes in the authors' own words. The documents themselves are not republished here; long verbatim passages are never reproduced. NOTE: This file governs the CONTENT of this pack. The repository tooling is licensed separately under MIT (see ../../LICENSE). THE FOUR SOURCES ================= S1 FAA Order 8110.49A, Software Approval Guidelines Publisher: US DOT Federal Aviation Administration, Aircraft Certification Service (AIR) National Policy Issued: effective 2018-03-29 Status: Active Signed: Dr. Michael C. Romanowski, Director, Policy & Innovation Division, Aircraft Certification Service (confirmed from PDF) Cancellation: cancels and supersedes FAA Order 8110.49 Chg 2, Software Approval Guidelines, dated April 10, 2017 (confirmed from PDF, Ch 1 para 4). Chapters 5 to 16 of Chg 2 were deleted in the change to 8110.49A because their topics duplicate AC 20-115D and AC 00-69 material (or were removed); this pack reconstructs what remains. Basis: US Government work, 17 U.S.C. § 105 Reconstructs: the FAA software review process (certification liaison, desk and on-site reviews, review planning agreements, review objectives), the level-of-involvement determination (criteria and the three Appendix A worksheets), and the software conformity inspection process (software part and installation conformity, ASE and ASI tasks, FAA Form 8120-10). Used in: ch01, ch02, ch03, ch04 S2 AC 20-115D, Airborne Software Development Assurance Using EUROCAE ED-12( ) and RTCA DO-178( ) Publisher: US DOT Federal Aviation Administration Advisory Circular Issued: 2017-07-21 Initiated by: AIR-134 Status: Active Cancellation: cancels AC 20-115C, Airborne Software Assurance, dated July 19, 2013 (confirmed from PDF, para 3). Basis: US Government work, 17 U.S.C. § 105 Reconstructs: which RTCA/EUROCAE documents the FAA recognizes for airborne software (ED-12C/DO-178C plus the DO-330 to DO-333 supplement set), the criteria for continuing to use ED-12B/DO-178B processes for new development, expected life cycle data submittal, tool qualification under DO-330, supplement use, field-loadable and user-modifiable software, and the legacy software modification flow chart. The recognized RTCA/EUROCAE documents are copyrighted; this pack restates only what the AC itself says. Used in: ch01, ch05, ch06 S3 AC 20-152A, Development Assurance for Airborne Electronic Hardware Publisher: US DOT Federal Aviation Administration Advisory Circular Issued: 2022-10-07 Initiated by: AIR-622 Status: Active Cancellation: cancels AC 20-152, RTCA, Inc., Document RTCA/DO-254, Design Assurance Guidance for Airborne Electronic Hardware, dated June 30, 2005 (confirmed from PDF). Basis: US Government work, 17 U.S.C. § 105 Reconstructs: when ED-80/DO-254 applies, the simple versus complex custom device classification and its assurance consequences, verification topics (robustness, the HDL code coverage method), tool assessment and qualification, previously developed hardware, commercial off-the-shelf (COTS) intellectual property, COTS devices, and circuit board assemblies (CBA). Single event effects (SEE) susceptibility is outside the AC and outside this pack. The recognized ED-80/DO-254 documents are copyrighted; this pack restates only what the AC itself says. Used in: ch01, ch07, ch08, ch09, ch10 S4 AC 00-69, Best Practices for Airborne Software Development Assurance Using EUROCAE ED-12( ) and RTCA DO-178( ) Publisher: US DOT Federal Aviation Administration, Aircraft Certification Service (AIR) Advisory Circular Issued: 2017-07-21 Initiated by: AIR-134 Status: Active Cancellation: none. No prior AC 00-69 is cancelled. Change field blank. Basis: US Government work, 17 U.S.C. § 105 Reconstructs: the change impact analysis best-practice contents (what a CIA identifies and which change classes it addresses), the clarification that data coupling and control coupling are distinct and both required, and the design-level error-handling practices (foreseeable error sources, mitigation in requirements, runtime protection at levels A and B). The AC states it is best practices, not guidance, and complementary to ED-12C/DO-178C and to AC 20-115D. It is not an acceptable means of compliance. Used in: ch01, ch06 (cross-link), ch11, ch12, ch13 EXCLUDED MATERIAL (cited by name only; no text reproduced) ========================================================= The following standards are copyrighted and are NOT licensed to this pack. The FAA documents recognize them; the pack names them and restates the FAA's own recognition and clarification text only. It reproduces no standard text, table, objective, or clause wording from any of them. - RTCA DO-178C, "Software Considerations in Airborne Systems and Equipment Certification" (2011-12-13), and its supplements DO-330 (Software Tool Qualification Considerations), DO-331 (Model-Based Development and Verification), DO-332 (Object-Oriented Technology and Related Techniques), and DO-333 (Formal Methods). - EUROCAE ED-12C, the European equivalent of DO-178C, and its supplements ED-215 to ED-218. - RTCA DO-254, "Design Assurance Guidance for Airborne Electronic Hardware" (2000-04-19), and its EUROCAE equivalent ED-80 (April 2000). - SAE ARP4754B, "Guidelines for Development of Civil Aircraft and Systems", and SAE ARP4761A, "Guidelines for Conducting the Safety Assessment Process on Civil Aircraft, Systems, and Equipment". - RTCA DO-248C / EUROCAE ED-94C FAQ #67, and RTCA DO-333 / EUROCAE ED-216. AC 00-69 names both. This pack names them and does not quote them. Buy these from RTCA, EUROCAE, or SAE as applicable. Their designations, titles, and editions are identified in this pack for reference only; see the avionics-signpost pack for the full pointer table. The exclusions and the cleared status of S1 to S4 are recorded in ../../docs/SOURCE-VETTING.md.