Commonwealth legislation

AD/PA-24/34 - 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This Act has been repealed and is no longer in force. It is retained for historical reference.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

This is a mandatory safety notice (called an Airworthiness Directive) for owners of Piper PA-24 Comanche aircraft fitted with specific Edo-Aire Mitchell autopilot systems (models AK066, AK083, AK083R, AK089, AK089R, or AK065E).

What it requires: You must install a shear pin (a safety device designed to break under pressure) in the autopilot's roll servo (the component that controls the aircraft's banking/turning motion).

Why it matters: Without this pin, if the autopilot malfunctions, it could jam the aircraft's roll controls—potentially making the aircraft uncontrollable. The shear pin ensures the autopilot can disconnect from the controls if it seizes up.

How to comply:

Check applicability: Confirm your aircraft has one of the listed autopilot models.
Follow the manual: Use either Piper Service Letter No. 695 or Edo-Aire Mitchell Service Letter ML 38 for installation instructions.
Deadline: Complete the installation within 200 hours of flight time after 30 September 1974.

JSON API Aviation / CASA instruments

Deep dive

Want the full deep dive?

Zoe can write the in-depth analysis on top of the summary above: how it works, who it affects and what each part actually does.

Current sections

Direct links to the current provisions in AD/PA-24/34 - Automatic Pilot Roll Servo Shear Pin - Installation.

AD/PA-24/34 - Automatic Pilot Roll Servo Shear Pin - Installation

meta-content-style-type: text/css meta-content-type: application/xhtml+xml; charset=utf-8 meta-generator: Aspose.Words for .NET 22.10.0

?xml version="1.0" encoding="utf-8" standalone="no"?>

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-24 (Comanche) Series Aeroplanes

AD/PA-24/34 Automatic Pilot Roll Servo Shear Pin - Installation

9/74

Applicability: All models fitted with Edo-Aire Mitchell Automatic Pilot AK066, AK083, AK083R, AK089, AK089R and AK065E.

Document: 1. Piper SL No. 695; or

Edo-Aire Mitchell SL ML 38.

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.