AD 2026-16-03: Airbus Helicopters

What the FAA requires

The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Model AS355E, AS355F, AS355F1, AS355F2, and AS355N helicopters. This AD was prompted by reports of cracks in the legs of the side supports of the tail rotor transmission fan. This AD requires repetitively inspecting the side supports of the tail rotor transmission fan for cracks and, depending on the results, replacing both side supports. The FAA is issuing this AD to address the unsafe condition on these products.

Read the full directive on the Federal Register →

Applicability

This AD applies to all Airbus Helicopters Model AS355E, AS355F, AS355F1, AS355F2, and AS355N helicopters, certificated in any category. (d) Subject Joint Aircraft System Component (JASC) Code 6500, Tail Rotor Drive System. (e) Unsafe Condition This AD was prompted by reports of cracks in the legs of the side support of the tail rotor transmission fan. The FAA is issuing this AD to detect and correct a cracked side support of the tail rotor transmission fan. The unsafe condition, if not addressed, could result in failure of the legs supporting the tail rotor transmission fan and displacement of the tail rotor transmission fan assembly, which could lead to the failure of the engine and main ge

Part numbers this directive names (2)

Extracted from the directive text. For each: the NSN cross-reference where one exists, sellers listing it here, and open DLA solicitations on the NSN.