Airworthiness Directive · Amendment 39-21934 · Tail rotor system
Airbus Helicopters
This AD applies to all Airbus Helicopters Model AS332L2 and EC225LP helicopters, certificated in any category.
The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Model AS332L2 and EC225LP helicopters. This AD was prompted by a report of loss of tightening torque on the nut that attaches the tail gear box (TGB) bevel wheel. This AD requires repetitive inspections (measurements) of the angular clearances of the TGB, and, depending on the findings, replacement of the TGB with a serviceable TGB, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. This AD also provides terminating action for certain repetitive inspections. The FAA is issuing this AD to address the unsafe condition on these products.
Except as specified in paragraph (h) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, European Union Aviation Safety Agency (EASA) AD 2021-0184R2, dated January 12, 2022 (EASA AD 2021-0184R2).
(1) Where EASA AD 2021-0184R2 requires compliance in terms of flight hours, this AD requires using hours time-in-service.
(2) Where EASA AD 2021-0184R2 refers to August 19, 2021 (the effective date of EASA AD 2021-0184, dated August 5, 2021), this AD requires using the effective date of this AD.
(3) Where the service information referenced in EASA AD 2021-0184R2 specifies sending parts to the manufacturer or an approved repair station to be examined, this AD does not include that requirement.
(4) This AD does not mandate compliance with the “Remarks” section of EASA AD 2021-0184R2.
Although the service information referenced in EASA AD 2021-0184R2 specifies to submit certain information to the manufacturer, this AD does not include that requirement.
