Airworthiness Directives; MD Helicopters, Inc. Model MD900 Helicopters
airworthiness · Rule · Final rule; request for comments. · Published 2002-12-11 · Effective 2002-12-26 · 67 FR 76109
Document
Document number
02-31176
Federal Register citation
67 FR 76109
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
MD
Publication date
2002-12-11
Effective date
2002-12-26
FAA docket
Docket No. 2002-SW-50-AD
Abstract
This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) 2002-22-51, which was sent previously to all known U.S. owners and operators of MD Helicopters, Inc. (MDHI) Model MD900 helicopters by individual letters. This AD requires, before further flight, certain procedures and inspections of the main rotor support static mast (mast) and the mast threads for any crack or pitting. If any crack or pitting is found, this AD requires removing the mast from service. The actions specified by this AD are intended to detect any crack or pitting in the mast that could result in failure of the mast, separation of the main rotor, and subsequent loss of control of the helicopter.