Airworthiness Directives; The Boeing Company Airplanes
airworthiness · Rule · Final rule. · Published 2019-10-23 · Effective 2019-11-27 · 84 FR 56678
Document
Document number
2019-23074
Federal Register citation
84 FR 56678
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
The Boeing Company
Publication date
2019-10-23
Effective date
2019-11-27
FAA docket
Docket No. FAA-2019-0524
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 747-400 and 747-400F series airplanes. This AD was prompted by an evaluation that determined fatigue cracks could develop in the underwing longerons. This AD requires repetitive inspections of the underwing longerons and certain fuselage skins for any crack, and applicable on-condition actions. The FAA is issuing this AD to address the unsafe condition on these products.