airworthiness · Rule · Final rule. · Published 2021-03-10 · Effective 2021-04-14 · 86 FR 13631
Document
Document number
2021-04940
Federal Register citation
86 FR 13631
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Sikorsky
Publication date
2021-03-10
Effective date
2021-04-14
FAA docket
Docket No. FAA-2020-0791
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain Sikorsky Aircraft Corporation (Sikorsky) Model S-92A helicopters. This AD was prompted by the manufacturer discovering nonconforming threads, resulting in a life limit reduction on multiple landing gear components including threaded hinge pins and main landing gear (MLG) and nose landing gear (NLG) actuator pins. This AD requires a one-time inspection of the landing gear for components with non- conforming threads and removal of any nonconforming threaded hinge pin and MLG and NLG actuator pin. The FAA is issuing this AD to address the unsafe condition on these products.