Commonwealth legislation

AD/R22/17 - Clutch Lock Switch - Modification

RepealedCTH

This Act has been repealed and is no longer in force. It is retained for historical reference.

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

1/10 complexity

This Airworthiness Directive (a mandatory safety order) requires a critical modification to the clutch system on specific Robinson R22 helicopters.

Who it affects: Owners and operators of Robinson R22 helicopters with serial numbers 0002 through 0225.

What you must do: Carry out the modification detailed in Robinson Service Bulletin 29. This changes the clutch lock switch so the actuator (the mechanical device that adjusts the clutch) stays active during flight rather than being disabled.

Why this matters: Keeping the actuator active maintains proper tension on the drive belts and provides an early warning if belts, bearings, or other drive components are about to fail. Without this fix, critical mechanical failures could occur in flight without warning.

Compliance deadline: Within 25 hours of flying time after 15 April 1983.

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AD/R22/17 - Clutch Lock Switch - Modification

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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/R22/17 Clutch Lock Switch - Modification 5/83

Applicability: All model R22 Series with S/Nos. 0002 to 0225. Requirement: Robinson S.B. 29.

Note: Robinson Safety Notice No. 14 should be read in conjunction with the compliance document.

Compliance: Within 25 hours time in service after 15th April 1983.

Background: By allowing the actuator to be active in flight, it can maintain the proper belt tension and provide an important warning of an impending failure of the Vee-belts, actuator bearings, or other drive system components.

Source text

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