Airworthiness Directives; McDonnell Douglas Model MD-90-30 Series Airplanes
airworthiness · Rule · Final rule. · Published 1999-09-03 · Effective 1999-10-08 · 64 FR 48284
Document
Document number
99-22922
Federal Register citation
64 FR 48284
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
McDonnell Douglas Model MD-90-30 Series
Publication date
1999-09-03
Effective date
1999-10-08
FAA docket
Docket No. 98-NM-69-AD
Abstract
This amendment adopts a new airworthiness directive (AD), applicable to all McDonnell Douglas MD-90-30 series airplanes, that requires revising the Airworthiness Limitations Section of the Instructions for Continued Airworthiness [MD-90-30 Airworthiness Limitations Instructions (ALI)] to incorporate certain replacement times for safe-life limited parts. This amendment is prompted by analysis of data that identified reduced replacement times for certain safe-life limited parts. The actions specified by this AD are intended to prevent fatigue cracking of various safe-life limited parts; such fatigue cracking could adversely affect the structural integrity of these airplanes.