Commonwealth legislation

AD/AC/76 - Engine Control Cables, Jam Nuts - 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This Act has been repealed and is no longer in force. It is retained for historical reference.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

What this means for aircraft owners

This safety rule applies if you own specific Twin Commander aircraft models (the 690 and 695 series with particular serial numbers listed in the directive).

What you must do You must modify the engine control cables by following Gulfstream Service Bulletin No. 188. This fixes a design flaw where the "jam nuts" (locking nuts that prevent bolts from vibrating loose) on the engine throttle or control cables can work free during flight.

Deadline Complete the modification within 100 hours of flight time after 31 May 1982, unless you have already done it.

Why this matters Loose jam nuts can cause partial or complete loss of engine control — a serious flight safety hazard. This is a mandatory fix, not optional. You need to keep records proving the work was done.

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Current sections

Direct links to the current provisions in AD/AC/76 - Engine Control Cables, Jam Nuts - Modification.

AD/AC/76 - Engine Control Cables, Jam Nuts - 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/76 Engine Control Cables, Jam Nuts - Modification 5/82

Applicability: All models 690, 690A & 690B with S/Nos. 11001 to 11566; All models 690C with S/Nos. 11600 to 11719;

All models 695 with S/Nos. 95000 to 95084 and All models 695A with S/Nos. 96001 to 96025.

Document: Gulfstream American Commander Division SB No. 188.

Compliance: Unless already accomplished within 100 hours’ time in service after 31 May 1982. Background: The engine control cable jam nuts may loosen in service.

Source text

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