Airworthiness Directive 2000-08-04
one-timeAirworthiness Directives; Robinson Helicopter Company Model R44 Helicopters
What this AD requires
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.
Which aircraft AD 2000-08-04 applies to
Replace sprag clutch P/N C188-3, S/N 0003 through 0505, with an airworthy unit S/N 0506 or higher; also remove Special Pilot Caution per R44 SB-32, dated Mar 22, 1999; related to prior AD 99-07-18 (Docket 99-SW-25-AD, Amdt 39-11127).
Whether AD 2000-08-04 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.
How AD compliance is recorded
A valid compliance record (14 CFR 43.9) states:
Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.
Look up a tail number →Read the full directive (Federal Register)Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.