AircraftDirectives
Airworthiness Directive

AD 2000-08-04 65 FR 20895

Federal Aviation Administration · 14 CFR part 39

FR document
00-9818
Amendment
39-11690
Published
2000-04-19
Models covered
1
Last live check
2026-08-17

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AD

2000-08-04

FR doc 00-9818 · 65 FR 20895

AD 2000-08-04Published 2000-04-19Effective 2000-05-04

Requires replacing certain serial number (S/N) sprag clutches with an airworthy sprag clutch as specified in this AD.

Full official 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.

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Applies to 1 model in our index