airworthiness · Rule · Final rule. · Published 2020-12-28 · Effective 2021-02-01 · 85 FR 84201
Document
Document number
2020-28385
Federal Register citation
85 FR 84201
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Sikorsky
Publication date
2020-12-28
Effective date
2021-02-01
FAA docket
Docket No. FAA-2020-0792
Abstract
The FAA is adopting a new airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model S-92A helicopters. This AD was prompted by seven incidents of fatigue cracks in the horizontal stabilizer root fitting FWD (forward root fitting). This AD requires establishing the life limit of certain part-numbered forward root fittings, establishing the life limit of certain part-numbered stabilizer strut fittings, repetitively inspecting certain parts, and depending on the inspection results, removing parts from service. The FAA is issuing this AD to address the unsafe condition on these products.