Commonwealth legislation

AD/R22/13 - Tail Rotor Drive Shaft - Replacement

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Commonwealth

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legislative instrument

Plain English Summary

2/10 complexity

Mandates replacement of the tail-rotor drive shaft on Robinson R22 helicopters, serial Nos. 0002–0282, installed per Robinson SB.21 and completed within 100 hours TIS after 30 September 1982. Owners/operators and maintenance organisations must procure, install, and certify the higher‑frequency shaft and bear associated costs and downtime.

The measure is intended to reduce tail-rotor drive‑shaft whipping and failure following inadvertent rotor overspeed; compliance follows the manufacturer’s service bulletin.

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AD/R22/13 - Tail Rotor Drive Shaft - Replacement

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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source Robinson R22 Series Helicopters

AD/R22/13 Tail Rotor Drive Shaft - Replacement 8/82

Applicability: Models R22 with S/Nos. 0002 to 0282. Document: Robinson SB.21.

Compliance: Within 100 hours time in service after 30 September 1982.

Background: There have been reported cases of tail rotor drive shaft whipping, due to inadvertent rotor overspeed. A higher frequency shaft is introduced to reduce the possibility of drive shaft whip, and subsequent failure.

Source text

Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.