{"id":"F2006B05684","name":"AD/PA-31/1 - Nose Landing Gear Idler Link Assembly - Modification","slug":"ad-pa-31-1-nose-landing-gear-idler-link-assembly-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135449,"registerId":"commonwealth-F2006B05684-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-31/1 - Nose Landing Gear Idler Link Assembly - Modification","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-31 Series Aeroplanes\n\n \n\nAD/PA-31/1 Nose Landing Gear Idler Link Assembly -\n\nModification\n\n\n12/67\n\n \n\nApplicability: All models with S/Nos. 31-2 to 31-7, 31-9 to 31-17, 31-20 to 31-24, 31-27 to 31-29,\n\n31-31 and 31-32.\n\n \n\nDocument: Piper SL No. 492, Part 11. Compliance: Before 1 January 1968.\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\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2360},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The directive remains a targeted safety modification for specific aircraft. There is no evidence of scope creep; it addresses exactly what the title suggests—modification of the nose landing gear idler link assembly on the specified Piper aircraft."},"complexity_factors":["Single, unambiguous action required (one specific modification)","Limited applicability (specific aircraft models and serial numbers only)","No defined terms or interpretation sections","Single compliance deadline with no conditional extensions","No cross-references to other legislation except one specific service letter"],"plain_english_summary":"**What this is:** A mandatory safety directive requiring owners of specific Piper PA-31 aircraft to modify the nose landing gear assembly.\n\n**Who it affects:** Owners and operators of Piper PA-31 model aircraft with serial numbers 31-2 through 31-7, 31-9 through 31-17, 31-20 through 31-24, 31-27 through 31-29, 31-31, and 31-32.\n\n**What you must do:** Modify the **nose landing gear idler link assembly** (a component that helps the front wheel fold up and down) according to the instructions in Piper Service Letter No. 492, Part 11.\n\n**Compliance deadline:** The directive required this work to be completed before 1 January 1968.\n\n**Why it matters:** This modification addresses a safety issue with the landing gear assembly to prevent potential failures during takeoff or landing."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-31-1-nose-landing-gear-idler-link-assembly-modification","history":"/api/acts/ad-pa-31-1-nose-landing-gear-idler-link-assembly-modification/history","analysis":"/api/acts/ad-pa-31-1-nose-landing-gear-idler-link-assembly-modification/analysis","conflicts":"/api/acts/ad-pa-31-1-nose-landing-gear-idler-link-assembly-modification/conflicts","importantCases":"/api/acts/ad-pa-31-1-nose-landing-gear-idler-link-assembly-modification/important-cases","documents":"/api/acts/ad-pa-31-1-nose-landing-gear-idler-link-assembly-modification/documents"}}