airworthiness · Rule · Final rule. · Published 2025-07-22 · Effective 2025-08-26 · 90 FR 34352
Document
Document number
2025-13715
Federal Register citation
90 FR 34352
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Airbus
Publication date
2025-07-22
Effective date
2025-08-26
FAA docket
Docket No. FAA-2025-0625
Abstract
The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Model AS 365 N3, EC 155B, and EC155B1 helicopters. This AD was prompted by reports of false engine fire warnings. This AD requires replacing affected engine fire detectors and prohibits installing an affected engine fire detector or an engine that contains an affected engine fire detector. The FAA is issuing this AD to address the unsafe condition on these products.