Commonwealth legislation

AD/PA-30/27 - 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This Act has been repealed and is no longer in force. It is retained for historical reference.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 is: A safety directive requiring owners of specific Piper Twin Comanche aircraft to install a protective device (called a shear pin) in the automatic pilot (autopilot) system.

Who it affects: Owners and operators of Piper PA-30 aeroplanes fitted with Edo-Aire Mitchell autopilot models AK089 or AK-89R.

What you must do: Install a shear pin in the autopilot's roll servo mechanism. A shear pin is a safety device designed to break under excessive strain, preventing damage to the control system.

How to comply: Follow the technical instructions in either:

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

Deadline: Complete the installation within 200 hours of flight time after 30 September 1974.

Why it matters: This modification prevents potential autopilot failures that could compromise aircraft control during flight.

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AD/PA-30/27 - 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-30 & 39 (Twin Comanche) Series Aeroplanes

AD/PA-30/27 Automatic Pilot Roll Servo Shear Pin - Installation

9/74

Applicability: All model PA-30 aeroplanes fitted with Edo-Aire Mitchell Automatic Pilot AK089, AK-89R.

Document: 1. 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.