Data / Federal rules / 2026-04614
Airworthiness Directives; Airbus Helicopters
The Federal Aviation Administration published this final rule in the Federal Register on March 10, 2026. It took effect on March 25, 2026. Comments closed on April 24, 2026.
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What the agency says
The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Model AS355E, AS355F, AS355F1, AS355F2, AS355N, and AS355NP helicopters. This AD was prompted by a report of a broken hose of the draining system in the rear cargo compartment due to hot air leakage from an engine combustion chamber drain valve failure. This AD requires for certain helicopters operational inspections (checks) of each engine drain valve, inspection of each affected rear cargo compartment hose (hose), installation and repetitive inspections of thermal papers, and depending on the results of those inspections, corrective actions. This AD also requires for certain helicopters, inspection of the rear cargo compartment hoses in conjunction with the initial operational inspections (checks) and, depending on the results of the inspections, performing corrective actions. Additionally, this AD prohibits installing an affected hose on any helicopter unless certain requirements are met. The FAA is issuing this AD to address the unsafe condition on these products.
Key facts
- Document number
- 2026-04614
- Type
- Final rule
- Action
- Final rule; request for comments
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- March 10, 2026
- Takes effect
- March 25, 2026
- Comments due
- April 24, 2026
- Dates
- This AD is effective March 25, 2026.
- Docket
- Docket No. FAA-2026-2290; Project Identifier MCAI-2025-01833-R; Amendment 39-23282; AD 2026-05-09
- 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 March 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.