{"id":"F2006B05459","name":"AD/PA-23/3 - Main Landing Gear Forgings and Wheels - Replacement","slug":"ad-pa-23-3-main-landing-gear-forgings-and-wheels-replacement","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":46220,"registerId":"commonwealth-F2006B05459-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-23/3 - Main Landing Gear Forgings and Wheels - Replacement","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-23 (Apache and Aztec) Series Aeroplanes\n\n \n\nAD/PA-23/3 Main Landing Gear Forgings NK and Wheels - Replacement\n\nApplicability: Model PA-23 with S/Nos. prior to 23-56 as applicable. Document: Piper SB No. 128.\n\nCompliance: Forthwith.\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1280},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow technical scope targeting specific structural components on identified aircraft models. There is no evidence of scope creep into unrelated systems or aircraft types."},"complexity_factors":["Single operative requirement with no exceptions or conditional triggers","Narrow applicability limited to specific aircraft model and serial number range","References only one external technical document (Piper SB No. 128)","No defined terms or interpretive provisions requiring legal analysis"],"plain_english_summary":"This Airworthiness Directive requires owners/operators of early-model Piper PA-23 Apache and Aztec aircraft (serials before 23‑56) to replace main landing gear forgings and wheels forthwith, following Piper Service Bulletin No. 128.  \n\nIt addresses fatigue and corrosion that can lead to landing-gear collapse during takeoff or landing, posing serious safety risks to occupants and people on the ground."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-23-3-main-landing-gear-forgings-and-wheels-replacement","history":"/api/acts/ad-pa-23-3-main-landing-gear-forgings-and-wheels-replacement/history","analysis":"/api/acts/ad-pa-23-3-main-landing-gear-forgings-and-wheels-replacement/analysis","conflicts":"/api/acts/ad-pa-23-3-main-landing-gear-forgings-and-wheels-replacement/conflicts","importantCases":"/api/acts/ad-pa-23-3-main-landing-gear-forgings-and-wheels-replacement/important-cases","documents":"/api/acts/ad-pa-23-3-main-landing-gear-forgings-and-wheels-replacement/documents"}}