Airworthiness Directive · Amendment 39-21512 · Nose/tail landing gear and 3210, main landing gear
Sikorsky Aircraft Corporation Helicopters
This AD applies to Sikorsky Model S-92A helicopters, certificated in any category, with serial numbers (S/Ns) 920006 through 920334 inclusive.
The FAA is superseding Airworthiness Directive (AD) 2021-04-16 which applied to certain Sikorsky Aircraft Corporation (Sikorsky) Model S-92A helicopters. AD 2021-04-16 required a one-time inspection of the landing gear for components with non-conforming threads and removal of any non-conforming threaded hinge pin and main landing gear (MLG) and nose landing gear (NLG) actuator pins. AD 2021-04-16 also prohibited installing certain part-numbered hinge and actuator pins on any helicopter. This AD requires the same actions but corrects erroneous part numbers. This AD was prompted by the discovery that certain part numbers listed in AD 2021-04-16 are incorrect. The FAA is issuing this AD to address the unsafe condition on these products.
Within 300 hours time in service after the effective date of this AD, visually inspect the components of the right MLG assembly, left MLG assembly, and NLG kit for threaded hinge pins part number (P/N) 92250-12281-101 and actuator pins P/N 92250-12287-101 and P/N 92250-12287-103 with S/Ns identified in Table 1 or 2 (threaded hinge pins) or in Table 1 (actuator pins), in Section 3, the Accomplishment Instructions, in the Sikorsky Aircraft Corporation Alert Service Bulletin 92-32-008, Basic Issue, dated January 21, 2020 (the ASB).
Note 1 to the introductory text of paragraph (g): See Figures 1 and 2 in Section 3, the Accomplishment Instructions, in the ASB for guidance on performing the visual inspection.
(1) If there is any threaded hinge pin, P/N 92250-12281-101, with an S/N listed in Table 1 or 2 in the ASB, before further flight, remove the threaded hinge pin from service.
(2) If there is any MLG or NLG actuator pin, P/N 92250-12287-101 or P/N 92250-12287-103, with an S/N listed in Table 1 in the ASB, before further flight, remove the actuator pin from service.
As of the effective date of this AD, do not install any threaded hinge pin 92250-12281-101 or actuator pin, P/N 92250-12287-101 or 92250-12287-103 with an S/N listed in Table 1 or 2 in Section 3, the Accomplishment Instructions, in the ASB, on any helicopter.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
