Data / Federal rules / 2025-23613
Airworthiness Directives; Restricted Category Model CH-47D Helicopters
The Federal Aviation Administration published this proposed rule in the Federal Register on December 22, 2025. Comments closed on February 5, 2026.
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What the agency says
The FAA proposes to adopt a new airworthiness directive (AD) for all restricted category Model CH-47D helicopters. This proposed AD was prompted by reports of fatigue cracking of the right-hand (RH) forward transmission support beam fitting. This proposed AD would require repetitively inspecting the RH forward transmission support beam fitting for cracking and, depending on the results, repairing any crack(s). This proposed AD would also require submitting data on any previous repairs and replaced fittings. The FAA is proposing this AD to address the unsafe condition on these products.
Key facts
- Document number
- 2025-23613
- Type
- Proposed rule
- Action
- Notice of proposed rulemaking (NPRM)
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- December 22, 2025
- Comments due
- February 5, 2026
- Dates
- The FAA must receive comments on this proposed AD by February 5, 2026.
- Docket
- Docket No. FAA-2025-5394; Project Identifier AD-2025-01194-R
- Regulation ID (RIN)
- 2120-AA64
- Code of Federal Regulations
- 14 CFR 39
- Topics
- Air transportation; Aircraft; Aviation safety; Incorporation by reference; Safety
- Pages
- 4
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Everything from the Federal Aviation Administration · Rules on air transportation · Rules on aircraft · Rules on aviation safety · Published in December 2025
Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.