AD/R22/39 - Upper Clutch Actuator Bearing
1AD/R22/39 - Upper Clutch Actuator Bearing
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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
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Robinson R22 Series Helicopters
AD/R22/39 Upper Clutch Actuator Bearing 4/95
Applicability: All series R22 helicopters.
Requirement: Inspect the upper clutch actuator bearing housing to ensure that only an approved bearing has been installed in the assembly.
Replace any non approved bearing with an approved bearing.
Note: An approved bearing is one that has been identified in the aircraft IPC. Alternatively, one that has been approved by a CAR 36 delegate as a suitable replacement for the bearing specified in the IPC.
Compliance: At next inspection for issue of a maintenance release or by 30 June 1995, whichever occurs first. Thereafter, prior to installation of the upper clutch bearing housing.
Background: During investigation into a recent Robinson R22 helicopter accident it was confirmed that failure of an unauthorised bearing installed in the upper clutch actuator housing may have caused the accident.