COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Robinson R22 Series Helicopters
AD/R22/18 Actuator Drive Screw A506-1 - Replacement 9/83
Applicability: All Robinson R22 models fitted with A051 series actuators, S/No. 152 through 346 (actuator serial numbers).
Requirement: Robinson Service Bulletin 32.
Compliance: Within 25 hours time in service or the 31st August 1983 whichever is the sooner.
Background: The manufacturer advises that there are a number of actuators in service which may have faulty drive screws installed.