Commonwealth legislation

AD/AC/43 - Elevator Servo Cable Guard Plate - 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This Act has been repealed and is no longer in force. It is retained for historical reference.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

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What this is: A safety order (called an Airworthiness Directive) issued by the Civil Aviation Safety Authority requiring a specific mechanical fix on certain aircraft.

Who it affects: Owners and operators of Twin Commander 500S and 500U aeroplanes with serial numbers between 1531–3085 and 3087, but only if the aircraft is fitted with a Mitchell Century III Autopilot System.

What it requires: You must install a guard plate to protect the elevator servo cables (the control cables that help move the tail elevators). The exact instructions for how to install it are contained in Aero Commander Service Letter 223 (a manufacturer technical bulletin).

Deadline: The work had to be completed within 300 hours of flight time after 30 September 1970.

Why it matters: The guard plate prevents the servo cables from being damaged or interfered with, which could otherwise compromise the pilot's ability to control the aircraft's pitch.

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AD/AC/43 - Elevator Servo Cable Guard Plate - 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 Twin Commander (Gulfstream/Rockwell/ Aerocommander 500, 600 and 700) Series Aeroplanes

AD/AC/43 Elevator Servo Cable Guard Plate - Installation 9/70

Applicability: Models 500S and 500U S/Nos. 1531 to 3085 and 3087 equipped with Mitchell Century III Autopilot System.

Document: Aero Commander SL 223.

Compliance: Within 300 hours’ time in service after 30 September 1970.

Source text

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