Commonwealth legislation

AD/PA-23/52 - Navigation Light Wiring Through Tip Tank - Inspection

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This Act has been repealed and is no longer in force. It is retained for historical reference.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

Owners of Piper PA-23-160/235/250 aircraft fitted with Met‑Co‑Aire wing tip fuel tanks must test the navigation‑light wiring for proper grounding because the wiring runs through the tank and a poor ground could spark and ignite fuel.

Within 25 flight hours after May 31, 1972 (and each time a tip tank is installed), connect a voltmeter or test lamp between the filler neck and airframe with nav lights on; a reading requires removal of the tank and immediate wiring repair.

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AD/PA-23/52 - Navigation Light Wiring Through Tip Tank - Inspection

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Piper PA-23 (Apache and Aztec) Series Aeroplanes

AD/PA-23/52 Navigation Light Wiring Through Tip Tank - Inspection

5/72

Applicability: All models PA23-160 and PA23-235 and PA23-250 fitted with Met-Co-Aire wing tip tanks.

Requirement: Ensure the navigation light wiring is connected correctly through the tip tank as follows:

Connect a voltmeter or test lamp between the fuel filler neck and the aircraft structure and switch on the navigation lights.

If the voltmeter does not register or the test lamp does not light, the wiring is connected correctly.

If the voltmeter does register or test lamp lights remove the tip tank and rectify the system.

Note: For bonding purposes the fuel filler neck is normally connected to the same lead that forms the earth for the navigation light.

Compliance: Within 25 hours time in service after 31 May 1972 and thereafter whenever a wing tip tank is fitted to the wing.

Source text

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

1 AD/PA-23/52 - Navigation Light Wiring Through Tip Tank - Inspection