airworthiness · Rule · Final rule. · Published 2026-08-06 · Effective 2026-09-10 · 91 FR 50691
Document
Document number
2026-16047
Federal Register citation
91 FR 50691
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Airbus
Publication date
2026-08-06
Effective date
2026-09-10
FAA docket
Docket No. FAA-2026-4638
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain Airbus Helicopters Model AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350D, EC130B4, and EC130T2 helicopters. This AD was prompted by reports of an incorrectly installed engine flange on the main gear box (MGB) engine coupling. This AD requires inspecting the MGB engine coupling for correct installation and, depending on the results, corrective actions. The FAA is issuing this AD to address the unsafe condition on these products.