{"id":"F2006B05479","name":"AD/PA-23/52 - Navigation Light Wiring Through Tip Tank - Inspection","slug":"ad-pa-23-52-navigation-light-wiring-through-tip-tank-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":46283,"registerId":"commonwealth-F2006B05479-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-23/52 - Navigation Light Wiring Through Tip Tank - Inspection","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nPiper PA-23 (Apache and Aztec) Series Aeroplanes\n\nAD/PA-23/52 Navigation Light Wiring Through Tip Tank - Inspection\n\n  \n5/72\n\nApplicability: All models PA23-160 and PA23-235 and PA23-250 fitted with Met-Co-Aire wing tip tanks.\n\nRequirement: Ensure the navigation light wiring is connected correctly through the tip tank as follows:\n\nConnect a voltmeter or test lamp between the fuel filler neck and the aircraft structure and switch on the navigation lights.\n\nIf the voltmeter does not register or the test lamp does not light, the wiring is connected correctly.\n\nIf the voltmeter does register or test lamp lights remove the tip tank and rectify the system.\n\nNote: For bonding purposes the fuel filler neck is normally connected to the same lead that forms the earth for the navigation light.\n\nCompliance: Within 25 hours time in service after 31 May 1972 and thereafter whenever a wing tip tank is fitted to the wing.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2068},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This airworthiness directive remains tightly focused on its original purpose of addressing a specific electrical grounding hazard in navigation light wiring. It has not expanded beyond inspection of wiring in Piper PA-23 aircraft with Met-Co-Aire wing tip tanks."},"complexity_factors":["Single specific aircraft type and model range (Piper PA-23 series)","Simple binary test procedure (pass/fail) with only two possible outcomes","No defined terms section or interpretive provisions","Clear compliance deadline with no conditional exceptions","Minimal cross-referencing to other legislative instruments"],"plain_english_summary":"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.  \n\nWithin 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."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-23-52-navigation-light-wiring-through-tip-tank-inspection","history":"/api/acts/ad-pa-23-52-navigation-light-wiring-through-tip-tank-inspection/history","analysis":"/api/acts/ad-pa-23-52-navigation-light-wiring-through-tip-tank-inspection/analysis","conflicts":"/api/acts/ad-pa-23-52-navigation-light-wiring-through-tip-tank-inspection/conflicts","importantCases":"/api/acts/ad-pa-23-52-navigation-light-wiring-through-tip-tank-inspection/important-cases","documents":"/api/acts/ad-pa-23-52-navigation-light-wiring-through-tip-tank-inspection/documents"}}