Commonwealth legislation

AD/PA-23/65 - Automatic Pilot Roll Servo Shear Pin - Installation

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This Act has been repealed and is no longer in force. It is retained for historical reference.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

2/10 complexity

What this does This directive mandates the installation of a shear pin (a safety device that breaks under excessive load to prevent system damage) in the automatic pilot (autopilot) roll servo mechanism on specific Piper aircraft.

Who it affects Owners and operators of Piper PA-23 Apache and Aztec aircraft fitted with specific Edo-Aire Mitchell autopilot models: AK090, AK081, AK081R, AK067, or AK079E.

What must be done Install the shear pin following the instructions in either:

Piper Service Letter No. 695, or
Edo-Aire Mitchell Service Letter ML38

Compliance deadline Within 200 hours of flight time after 30 September 1974.

Why it matters This safety modification prevents potential autopilot malfunction, uncommanded control surface movement, or structural damage to the servo mechanism that could compromise aircraft control during flight.

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AD/PA-23/65 - Automatic Pilot Roll Servo Shear Pin - Installation

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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-23/65 Automatic Pilot Roll Servo Shear Pin - Installation 9/74

Applicability: All models fitted with Edo-Aire Mitchell Automatic Pilot AK090, AK081, AK081R, AK067 or AK079E.

Document: Piper SL No. 695; or

Edo-Aire Mitchell SL ML38.

Compliance: Within 200 hours time in service after 30 September 1974.

Source text

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