Airworthiness Directives; Learjet Model 45 Airplanes
airworthiness · Rule · Final rule. · Published 2008-01-10 · Effective 2008-02-14 · 73 FR 1815
Document
Document number
E8-163
Federal Register citation
73 FR 1815
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Learjet Model 45
Publication date
2008-01-10
Effective date
2008-02-14
FAA docket
Docket No. FAA-2006-25174
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain Learjet Model 45 airplanes. This AD requires revising the Airworthiness Limitations section of the airplane maintenance manual to incorporate certain inspections and compliance times to detect fatigue cracking of certain principal structural elements (PSEs). This AD results from new and more restrictive life limits and inspection intervals for certain 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.