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Atlas / ADs / 2026-09773

FAA · Airworthiness Directive

Airworthiness Directives; Airbus Helicopters

AD 2026-09773 Published 2026-05-15 2 models 455 US-registered tails affected Federal Register ↗

Abstract

The FAA proposes to adopt a new airworthiness directive (AD) for certain Airbus Helicopters Model AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350D, EC130B4, and EC130T2 helicopters. This proposed AD was prompted by reports of an incorrectly installed engine flange on the main gear box (MGB) engine coupling. This proposed AD would require inspecting the MGB engine coupling for correct installation and, depending on the results, corrective actions. The FAA is proposing this AD to address the unsafe condition on these products.

Applicability

Aircraft makes and models this AD applies to, sorted by US-registered fleet size.

Compliance instructions

The full AD text — required actions, compliance times, parts/serial numbers, and methods of compliance — is in the Federal Register publication. We do not paraphrase ADs because misreading the compliance instructions is a safety risk.

Read AD on Federal Register ↗