Airworthiness Directives; Robinson Helicopter Company Model R44 Helicopters
airworthiness · Rule · Final rule; request for comments. · Published 2000-04-19 · Effective 2000-05-04 · 65 FR 20895
Document
Document number
00-9818
Federal Register citation
65 FR 20895
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Robinson Helicopter Company Model R44
Publication date
2000-04-19
Effective date
2000-05-04
FAA docket
Docket No. 99-SW-70-AD
Abstract
This amendment adopts a new airworthiness directive (AD), applicable to Robinson Helicopter Company (RHC) Model R44 helicopters. This action requires replacing certain serial number (S/N) sprag clutches with an airworthy sprag clutch as specified in this AD. This amendment is prompted by several reports of sprag clutch failures. The actions specified by this AD are intended to prevent a sprag clutch failure, loss of main rotor RPM during autorotation, and subsequent loss of control of the helicopter.