{"id":"F2008L04106","name":"AD/PA-25/29 - Wing Strut - Inspection - CANCELLED","slug":"ad-pa-25-29-wing-strut-inspection-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":76010,"registerId":"commonwealth-F2008L04106-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-25 (Pawnee) Series Aeroplanes","sectionType":"division","heading":"Piper PA-25 (Pawnee) Series Aeroplanes","content":"### Piper PA-25 (Pawnee) Series Aeroplanes\n\n| AD/PA-25/29 | Wing Strut - Inspection | 12/2008 |\n| ----------- | ----------------------- | ------- |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                                          |\n| ------------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 20 November 2008.                                                                                                                                                                                                                                                           |\n| Background:  | This unique Australian AD specified periodic inspection for cracking of the wing lift struts. The AD was not based on a Piper service document. Compliance was required at intervals not exceeding 500 hours time in service. Using an AD to make this inspection mandatory is no longer warranted. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n2 October 2008","sortOrder":0},{"sectionNumber":"AD/PA-25/29","sectionType":"part","heading":"AD/PA-25/29","content":"## AD/PA-25/29","sortOrder":1},{"sectionNumber":"Wing Strut - Inspection","sectionType":"part","heading":"Wing Strut - Inspection","content":"## Wing Strut - Inspection","sortOrder":2},{"sectionNumber":"12/2008","sectionType":"part","heading":"12/2008","content":"## 12/2008","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1374},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The instrument performs exactly one function: cancelling a previous directive. It does not expand regulatory scope, create new offences, or impose additional compliance burdens. The regulatory scope has narrowed by removing a mandatory inspection requirement."},"complexity_factors":["Single operative provision (cancellation of previous directive)","No defined terms or interpretation section","No conditional logic, exceptions, or procedural requirements","Minimal cross-referencing (only refers to the specific AD being cancelled)","Extremely short document (approximately 150 words of substantive content)"],"plain_english_summary":"This document **cancels** a previous aviation safety rule that required owners of **Piper PA-25 Pawnee aircraft** to regularly inspect the wing struts (the structural supports connecting the wings to the body of the plane) for cracks.\n\n**What it does:**\n- **Cancels** Airworthiness Directive AD/PA-25/29 effective 20 November 2008\n- **Removes the mandatory inspection** that previously required checking wing lift struts for cracking every 500 hours of flight time\n\n**Why it matters:**\nThe Civil Aviation Safety Authority (CASA) determined that legally mandating this specific inspection was no longer warranted. While operators may still choose to inspect struts as part of good maintenance practice, it is no longer a legal requirement under this directive.\n\n**Who is affected:**\nOwners and operators of Piper PA-25 Pawnee series aircraft, which are primarily used for agricultural spraying and towing gliders."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-25-29-wing-strut-inspection-cancelled","history":"/api/acts/ad-pa-25-29-wing-strut-inspection-cancelled/history","analysis":"/api/acts/ad-pa-25-29-wing-strut-inspection-cancelled/analysis","conflicts":"/api/acts/ad-pa-25-29-wing-strut-inspection-cancelled/conflicts","importantCases":"/api/acts/ad-pa-25-29-wing-strut-inspection-cancelled/important-cases","documents":"/api/acts/ad-pa-25-29-wing-strut-inspection-cancelled/documents"}}