Data / Federal rules / 2026-19757
Airworthiness Directives; Airbus Helicopters Deutschland GmbH (AHD) Helicopters
The Federal Aviation Administration published this final rule in the Federal Register on September 28, 2026. It took effect on October 13, 2026. Comments are due by November 12, 2026.
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What the agency says
The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Deutschland GmbH (AHD) Model EC135P1, EC135P2, EC135P2+, EC135P3, EC135T1, EC135T2, EC135T2+, EC135T3, and EC635T2+ helicopters. This AD was prompted by a determination that in cases of loss of oil from the main gearbox (MGB), the low pressure caution or warning light might not activate. This AD requires revising the existing rotorcraft flight manual (RFM) for the helicopter by incorporating updated emergency, malfunction, and normal procedures. The FAA is issuing this AD to address the unsafe condition on these products.
Key facts
- Document number
- 2026-19757
- Type
- Final rule
- Action
- Final rule; request for comments
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- September 28, 2026
- Takes effect
- October 13, 2026
- Comments due
- November 12, 2026
- Dates
- This AD is effective October 13, 2026.
- Docket
- Docket No. FAA-2026-11786; Project Identifier MCAI-2026-00439-R; Amendment 39-23479; AD 2026-20-06
- Regulation ID (RIN)
- 2120-AA64
- Code of Federal Regulations
- 14 CFR 39
- Topics
- Air transportation; Aircraft; Aviation safety; Incorporation by reference; Safety
- Pages
- 3
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Everything from the Federal Aviation Administration · Rules on air transportation · Rules on aircraft · Rules on aviation safety · Published in September 2026
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.