Airworthiness Directive 2000-20-51
one-timeAirworthiness Directives; Robinson Helicopter Company Model R22 Helicopters
What this AD requires
This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) 2000-20-51, which was sent previously to all known U.S. owners and operators of Robinson Helicopter Company (RHC) Model R22 helicopters by individual letters. This AD requires checking the yoke half assembly (yoke) for any crack and replacing a cracked yoke assembly before further flight. This AD also requires replacing certain yokes with airworthy yokes before further flight after January 1, 2001. This AD is prompted by the discovery of cracks in the yoke. The actions specified by this AD are intended to detect crack formation and growth, which could result in separation of the yokes from the main rotor drive shaft and subsequent loss of control of the helicopter.
Which aircraft AD 2000-20-51 applies to
Requires daily/pre-flight visual crack checks of main rotor yokes and replacement of cracked or affected-lot yoke P/N A203-5 with airworthy P/N A203-7 (both yokes must match); references Robinson R22 SB SB-88A. Finalized Emergency AD 2000-20-51.
Whether AD 2000-20-51 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.