Commonwealth legislation

AD/AC/61 Amdt 1 - Elevator Trim Sprocket Assembly - Inspection and 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This Act has been repealed and is no longer in force. It is retained for historical reference.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

2/10 complexity

This is a safety order (called an Airworthiness Directive) issued by the Civil Aviation Safety Authority (CASA) for owners and operators of specific Twin Commander aircraft.

What it requires:

Inspection and modification of the elevator trim sprocket assembly — a mechanical component that helps control the aircraft's pitch (nose up/down movement)
The work must be carried out according to Rockwell International Service Letter No. 317

Who it affects:

Owners and operators of Twin Commander (Gulfstream/Rockwell/Aero Commander) 500, 600, and 700 series aeroplanes

When it must be done:

Category 1: Within 100 hours of flight time after 30 September 1978, or
Before 1 September 1979

Why it matters: This directive prevents potential failure of a critical flight control component that could lead to loss of aircraft control. It is legally binding and must be completed before the aircraft can continue operating.

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Current sections

Direct links to the current provisions in AD/AC/61 Amdt 1 - Elevator Trim Sprocket Assembly - Inspection and Modification.

AD/AC/61 Amdt 1 - Elevator Trim Sprocket Assembly - Inspection and 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 Twin Commander (Gulfstream/Rockwell/ Aerocommander 500, 600 and 700) Series Aeroplanes

AD/AC/61

Amdt 1

Elevator Trim Sprocket Assembly - Inspection and Modification

9/78

Applicability: As referenced in SL No. 317. Document: Rockwell International SL No. 317.

Compliance: Category 1 - Within 100 hours’ time in service after 30 September 1978.

- Before 1 September 1979.

Source text

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

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