{"id":"F2009L00202","name":"AD/PA-23/72 - Auto Pilot Servo Bridle Clamp Bolt Torque - Modification - CANCELLED","slug":"ad-pa-23-72-auto-pilot-servo-bridle-clamp-bolt-torque-modification-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":76666,"registerId":"commonwealth-F2009L00202-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-23 (Apache and Aztec) Series Ae","sectionType":"division","heading":"Piper PA-23 (Apache and Aztec) Series Aeroplanes","content":"### Piper PA-23 (Apache and Aztec) Series Aeroplanes\n\n| AD/PA-23/72 | Auto Pilot Servo Bridle ClampBolt Torque - Modification | 2/2009 |\n| ----------- | ------------------------------------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                  |\n| ------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 12 February 2009.                                                                                                                                                                                                                   |\n| Background:  | This unique Australian AD required once-only modification of the autopilot servo bridle clamp bolt in accordance with Piper SB No. 558. The AD required compliance within 100 hours TIS after September 1977. All affected aircraft have now been modified. |\n\n![](image.001.png)\n\nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n23 December 2008","sortOrder":0},{"sectionNumber":"AD/PA-23/72","sectionType":"part","heading":"AD/PA-23/72","content":"## AD/PA-23/72","sortOrder":1},{"sectionNumber":"Auto Pilot Servo Bridle ClampBolt Torque","sectionType":"part","heading":"Auto Pilot Servo Bridle ClampBolt Torque - Modification","content":"## Auto Pilot Servo Bridle Clamp  \nBolt Torque - Modification","sortOrder":2},{"sectionNumber":"2/2009","sectionType":"part","heading":"2/2009","content":"## 2/2009","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2160},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":true,"description":"The legislation has been completely cancelled (revoked). The original directive required mandatory aircraft modifications, but this cancellation removes all obligations, reducing the regulatory scope to nil as all affected aircraft have been modified."},"complexity_factors":["Single administrative action (cancellation)","No defined terms or interpretation sections","No conditional provisions or exceptions","Straightforward background statement with no legislative cross-references"],"plain_english_summary":"**What this document does:**\nThis officially cancels a previous aviation safety rule (Airworthiness Directive AD/PA-23/72) that required owners of specific Piper aircraft to modify the autopilot system.\n\n**Who it affects:**\nOwners and operators of Piper PA-23 Apache and Aztec series aircraft.\n\n**Why it matters:**\nThe original rule required a one-time fix to the autopilot servo bridle clamp bolt to ensure safety. Since all affected aircraft have now completed this modification (as of February 2009), the rule is no longer needed and has been cancelled. This removes the compliance obligation from aircraft operators."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-23-72-auto-pilot-servo-bridle-clamp-bolt-torque-modification-cancelled","history":"/api/acts/ad-pa-23-72-auto-pilot-servo-bridle-clamp-bolt-torque-modification-cancelled/history","analysis":"/api/acts/ad-pa-23-72-auto-pilot-servo-bridle-clamp-bolt-torque-modification-cancelled/analysis","conflicts":"/api/acts/ad-pa-23-72-auto-pilot-servo-bridle-clamp-bolt-torque-modification-cancelled/conflicts","importantCases":"/api/acts/ad-pa-23-72-auto-pilot-servo-bridle-clamp-bolt-torque-modification-cancelled/important-cases","documents":"/api/acts/ad-pa-23-72-auto-pilot-servo-bridle-clamp-bolt-torque-modification-cancelled/documents"}}