Airworthiness Directives; The Boeing Company Airplanes
airworthiness · Rule · Final rule. · Published 2012-04-10 · Effective 2012-05-15 · 77 FR 21429
Document
Document number
2012-8228
Federal Register citation
77 FR 21429
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
The Boeing Company
Publication date
2012-04-10
Effective date
2012-05-15
FAA docket
Docket No. FAA-2011-0025
Abstract
We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 777 airplanes. This AD was prompted by a new revision to the airworthiness limitations of the maintenance planning document. This AD requires revising the maintenance program to update inspection requirements to detect fatigue cracking of principal structural elements (PSEs). We are issuing this AD to ensure that fatigue cracking of various PSEs is detected and corrected; such fatigue cracking could adversely affect the structural integrity of these airplanes.