Data / Federal rules / 2025-16401
Airworthiness Directives; ATR-GIE Avions de Transport Régional Airplanes
The Federal Aviation Administration published this final rule in the Federal Register on August 27, 2025. It took effect on September 11, 2025. Comments closed on October 14, 2025.
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What the agency says
The FAA is adopting a new airworthiness directive (AD) for certain ATR--GIE Avions de Transport R[eacute]gional Model ATR42-500 and ATR72-212A airplanes. This AD was prompted by a finding that dispatch with a failed main hydraulic pump under the provisions of a certain master minimum equipment list (MMEL) item, combined with failure of the DC EMER BUS, could lead to failure of multiple system losses. This AD requires revising the existing minimum equipment list (MEL) to incorporate new provisions to ensure appropriate actions are taken when the airplane is dispatched with one inoperative main hydraulic pump. The FAA is issuing this AD to address the unsafe condition on these products.
Key facts
- Document number
- 2025-16401
- Type
- Final rule
- Action
- Final rule; request for comments
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- August 27, 2025
- Takes effect
- September 11, 2025
- Comments due
- October 14, 2025
- Dates
- This AD is effective September 11, 2025.
- Docket
- Docket No. FAA-2025-2267; Project Identifier MCAI-2025-00819-T; Amendment 39-23125; AD 2025-17-15
- 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 August 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.