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Airworthiness Directives; Leonardo S.p.a. Helicopters
Final rule · Federal Register document 2026-20100
- Published
- 10/01/2026
- Comments due
- 11/16/2026
- 18 days left
- Effective
- 10/16/2026
- Pages
- 4
Summary
Final rule; request for comments.
The FAA is adopting a new airworthiness directive (AD) for certain Leonardo S.p.a. Model AB139 and AW139 helicopters. This AD was prompted by a report of a nozzle exhaust duct clamp separating from the engine nozzle duct and coming to rest on the tail rotor (TR) drive shaft. This AD requires repetitively inspecting certain clamp assemblies and, depending on the results of the inspection, replacing parts. This AD also prohibits the installation of an affected clamp assembly, unless certain requirements are met. The FAA is issuing this AD to address the unsafe condition on these products.
Details
- Type
- Final rule
- Docket
- Docket No. FAA-2026-11789; Project Identifier MCAI-2026-00908-R; Amendment 39-23480; AD 2026-20-07
- Regulation ID (RIN)
- 2120-AA64
- CFR parts
- 14 CFR 39
- Significant under E.O. 12866
- No
- Topics
- Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety
This page summarizes a Federal Register document. Only the official Federal Register text has legal effect. Comment deadlines can be extended or reopened by a later notice.
Source: Office of the Federal Register, via the Federal Register API · Last updated 10/01/2026