Commonwealth legislation

AD/PA-34/39 Amdt 1 - Ammeter Installation

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Commonwealth

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legislative instrument

Plain English Summary

2/10 complexity

This directive requires owners/operators of certain Piper PA-34-200T aeroplanes (specified serials, except those with 90 A alternators) to modify the ammeter installation per Piper Service Bulletin No. 811A so the ammeter shunt is correctly positioned and supported, preventing loads on the 20‑gauge ammeter wires. Work must be done within 100 hours TIS after 31 July 1986. It matters because loose/shorting ammeter connections risk electrical failure or cockpit fire; owners bear compliance costs.

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AD/PA-34/39 Amdt 1 - Ammeter Installation

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Piper PA-34 (Seneca) Series Aeroplanes

AD/PA-34/39

Amdt 1

Ammeter Installation 12/86

Applicability: Model PA-34-200T with S/Nos. 34-7570001 through 34-8170092, except those aircraft fitted with ninety (90) ampere alternators.

Requirement: Action in accordance with Piper Service Bulletin No. 811A. Ensure the shunt is positioned and adequately supported to prevent mechanical loads being applied to the 20 gauge wires connected to the ammeter.

Compliance: Within 100 hours time in service after 31 July 1986.

Background: Reports have been received of loose and/or shorting ammeter connections at the ammeter cluster gauge. If this condition is allowed to continue without rectification the possibility exists for electrical failure or fire within the cockpit. Amendment 1 clarifies the protection requirement.

Source text

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

1 AD/PA-34/39 Amdt 1 - Ammeter Installation