airworthiness · Rule · Final rule. · Published 2021-12-06 · Effective 2022-01-10 · 86 FR 68899
Document
Document number
2021-26330
Federal Register citation
86 FR 68899
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Learjet Inc.
Publication date
2021-12-06
Effective date
2022-01-10
FAA docket
Docket No. FAA-2021-0157
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain Learjet Inc. (Learjet) Model 45 airplanes. This AD was prompted by reports of corrosion found on the upper surface of the lower center wing mid spar splice plate. This AD requires repetitively inspecting the center wing area for corrosion and deterioration of protective treatments, removing any corrosion, and treating any deteriorated areas. The FAA is issuing this AD to address the unsafe condition on these products.