{"id":"F2006B05915","name":"AD/PA-34/45 Amdt 1 - Wing and Airframe Retirement Lives","slug":"ad-pa-34-45-amdt-1-wing-and-airframe-retirement-lives","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135990,"registerId":"commonwealth-F2006B05915-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-34/45 Amdt 1 - Wing and Airframe Retirement Lives","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-34 (Seneca) Series Aeroplanes\n\n \n\n# AD/PA-34/45\n\nAmdt 1\n\nApplicability: All models.\n\n# Wing and Airframe Retirement Lives 6/95\n\n \n\nRequirement: 1. Retire the wing main spar, wing main spar carry-through structure, and wing main spar attachment bolts as follows:\n\n \n\nFor the PA-34-200 series, before 13 000 hours time in service or 13 000 flights, whichever occurs first;\n\n \n\nFor the PA-34-200T series, before 14 500 hours time in service or 14 500 flights, whichever occurs first;\n\n \n\nFor the PA-34-220T series, before 12 300 hours time in service or 12 300 flights, whichever occurs first.\n\n \n\n2. Retire the remainder of the airframe, for all models, before 24 400 hours time in service or 24 400 flights, whichever occurs first.\n\n \n\nNote: Where a period of the aircraft’s history is unknown, or where a longer average flight time cannot be justified, it must be assumed that the average flight time for the period is 39 minutes (0.65 hours).\n\n \n\nCompliance: The compliance of the original AD remains unchanged; Retire affected components upon reaching their safe lives or 5 April 1995, whichever occurs last.\n\n \n\nThis amendment is effective 25 May 1995.\n\n \n\nBackground: The manufacturer has submitted a fatigue substantiation for the safe life of the wing and associated structure. Pending substantiation of a longer safe life for the remainder of the aircraft structure a life corresponding to twice the PA-34-220T wing life has been promulgated. Amendment 1 has been raised to add a note addressing unknown periods of aircraft history and clarifies the components to be retired.\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":{"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This amendment remains tightly focused on its original purpose: establishing safe life limits for PA-34 wing structures and airframes. The amendment adds a practical calculation assumption for unknown flight histories and clarifies which specific components are covered, but does not expand beyond the original safety intent."},"complexity_factors":["Short, single-purpose document (1 page) with clear applicability statement","Only 3 defined model categories with specific numeric thresholds","Simple conditional logic: 'whichever occurs first' for hours vs. flights","Single cross-reference to original AD for baseline compliance date","One substantive amendment adding a calculation assumption (39-minute default flight time) and clarifying component scope","No nested exceptions or sub-delegations"],"plain_english_summary":"This CASA Airworthiness Directive mandates permanent retirement and replacement of critical structural parts (notably wing spars) on all Piper PA‑34 Seneca variants at specified safe‑life limits, preventing metal‑fatigue failures. It affects owners, operators, maintenance engineers and indirectly pilots, requires counting flight hours or cycles (use 0.65 hours per flight if history is unknown), and parts must be retired when they hit their limit or by 5 April 1995, whichever is later."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"Amendment 1 clarifies which wing components must be retired and adds a rule for handling unknown periods of aircraft history (the 39-minute average flight assumption). The core retirement regime and compliance timing remain unchanged: components are retired at their safe lives or by the stated date (Compliance; Background)."},"complexity_factors":["Different numeric safe-life limits for three PA-34 model groups (PA-34-200, PA-34-200T, PA-34-220T).","Dual metric retirement trigger: hours-in-service OR number of flights, whichever occurs first.","A specific assumption for unknown historical periods: 39 minutes (0.65 hours) average flight time (Note).","Separate retirement life for remainder of airframe set at twice the PA-34-220T wing life (background rationale).","Compliance timing rule tying retirement to safe-life or a fixed date (5 April 1995) (Compliance).","Operational and administrative burden on owners/operators to track hours and flights and to plan replacements."],"plain_english_summary":"Sets mandatory retirement lives for the wing main spar, its carry-through structure and attachment bolts, and for the remainder of the airframe on all Piper PA-34 models, measured in hours-in-service or number of flights (whichever occurs first). The manufacturer supplied a fatigue substantiation for the wing; owners/operators must bear replacement costs, track hours/flights, and—where history is unknown—apply a 39-minute average flight assumption, increasing monitoring and compliance burden. (Requirement; Note; Compliance.)"}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-34-45-amdt-1-wing-and-airframe-retirement-lives","history":"/api/acts/ad-pa-34-45-amdt-1-wing-and-airframe-retirement-lives/history","analysis":"/api/acts/ad-pa-34-45-amdt-1-wing-and-airframe-retirement-lives/analysis","conflicts":"/api/acts/ad-pa-34-45-amdt-1-wing-and-airframe-retirement-lives/conflicts","importantCases":"/api/acts/ad-pa-34-45-amdt-1-wing-and-airframe-retirement-lives/important-cases","documents":"/api/acts/ad-pa-34-45-amdt-1-wing-and-airframe-retirement-lives/documents"}}