Commonwealth legislation

AD/PA-23/72 - Auto Pilot Servo Bridle Clamp Bolt Torque - 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This Act has been repealed and is no longer in force. It is retained for historical reference.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 from the aviation regulator) requires owners of specific Piper aircraft to fix a potential fault in the autopilot system.

Who is affected? Owners and operators of Piper PA-23-250 model aircraft with serial numbers between 27-4575 and 27-7754077.

What must be done? The bolt that holds the autopilot servo bridle clamp must be modified to ensure it is tightened to the correct tension (torque). This work must follow the manufacturer's instructions in Piper Service Bulletin No. 558.

When? Within 100 hours of flight time after 30 September 1977.

Why it matters: Improper bolt torque could cause the autopilot to fail, creating a safety risk during flight.

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AD/PA-23/72 - Auto Pilot Servo Bridle Clamp Bolt Torque - 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 Piper PA-23 (Apache and Aztec) Series Aeroplanes

AD/PA-23/72 Auto Pilot Servo Bridle Clamp Bolt Torque - Modification

Applicability: Model PA23-250 with S/Nos. 27-4575 to 27-7754077. Document: Piper SB No. 558.

Compliance: Within 100 hours time in service after 30 September 1977.

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Source text

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