Airworthiness Directives; McDonnell Douglas Helicopter Systems Model MD-900 Helicopters
airworthiness · Rule · Final rule; request for comments. · Published 1999-03-03 · Effective 1999-03-18 · 64 FR 10209
Document
Document number
99-5038
Federal Register citation
64 FR 10209
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
McDonnell Douglas Helicopter Systems Model MD-900
Publication date
1999-03-03
Effective date
1999-03-18
FAA docket
Docket No. 98-SW-34-AD
Abstract
This amendment adopts a new airworthiness directive (AD) that is applicable to McDonnell Douglas Helicopter Systems (MDHS) Model MD- 900 helicopters. This action requires establishing or reducing certain life limits, applying serial numbers (S/N's), determining hours time- in-service (TIS), and creating component history cards or equivalent records for various parts. This amendment is prompted by analysis that indicates a need for establishing or reducing life limits to avoid fatigue failure of certain parts. The actions specified by this AD are intended to apply appropriate life limits to various parts.