{"id":"F2006B05557","name":"AD/PA-25/2 Amdt 1 - Main Undercarriage Vee Assemblies - Inspection","slug":"ad-pa-25-2-amdt-1-main-undercarriage-vee-assemblies-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":46529,"registerId":"commonwealth-F2006B05557-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-25/2 Amdt 1 - Main Undercarriage Vee Assemblies - Inspection","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Piper PA-25 (Pawnee) Series Aeroplanes\n\n \n\nAD/PA-25/2\n\nAmdt 1\n\n\nMain Undercarriage Vee Assemblies - Inspection 11/67\n\n \n\nApplicability: Model PA-25 and variants of that model.\n\n \n\nRequirement: 1. Make a close inspection of the main undercarriage vee assembly P/N 61024-00 and 61024-01 for cracks in the tubular members in the vicinity of the welds at the shock unit attachment lugs.\n\n \n\n2.    The inspection shall be carried out with the aid of at least a 6X magnifying lens. Suspect cracks are to be confirmed by dye penetrant inspection.\n\n \n\n3.    Defective parts shall be repaired in accordance with an approved repair scheme before further flight.\n\n \n\nCompliance: At intervals not exceeding 100 hours time in service after 1 September 1971.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2718},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"As Amendment 1 to an existing directive, this instrument maintains the original narrow scope of mandating safety inspections for specific undercarriage components on Piper PA-25 aircraft. The amendment appears to refine technical requirements without expanding the directive's purpose beyond its original safety intent."},"complexity_factors":["Highly specific technical part numbers (P/N 61024-00 and 61024-01) limit applicability","Prescriptive technical methodology requiring specialized equipment (6X magnification lens, dye penetrant inspection)","Reference to undefined external standard ('approved repair scheme')","Aviation-specific compliance metric ('time in service' rather than calendar time)"],"plain_english_summary":"This Airworthiness Directive requires owners/operators of Piper PA-25 Pawnee aircraft to inspect the V-shaped landing gear struts (P/Ns 61024-00, 61024-01) for cracks at the welds where shock absorbers attach. Inspections must use at least 6X magnification, suspicious findings confirmed by dye-penetrant test, and any cracked parts repaired before flight, repeating every 100 flight hours (from 1 Sept 1971). This prevents potentially catastrophic gear failures."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-25-2-amdt-1-main-undercarriage-vee-assemblies-inspection","history":"/api/acts/ad-pa-25-2-amdt-1-main-undercarriage-vee-assemblies-inspection/history","analysis":"/api/acts/ad-pa-25-2-amdt-1-main-undercarriage-vee-assemblies-inspection/analysis","conflicts":"/api/acts/ad-pa-25-2-amdt-1-main-undercarriage-vee-assemblies-inspection/conflicts","importantCases":"/api/acts/ad-pa-25-2-amdt-1-main-undercarriage-vee-assemblies-inspection/important-cases","documents":"/api/acts/ad-pa-25-2-amdt-1-main-undercarriage-vee-assemblies-inspection/documents"}}