{"id":"F2006B05476","name":"AD/PA-23/5 - Main Landing Gear Attachment Points - Modification","slug":"ad-pa-23-5-main-landing-gear-attachment-points-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":46274,"registerId":"commonwealth-F2006B05476-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-23/5 - Main Landing Gear Attachment Points - 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-23 (Apache and Aztec) Series Aeroplanes\n\n \n\nAD/PA-23/5 Main Landing Gear Attachment NK\n\nPoints - Modification\n\nApplicability: Model PA-23 with S/Nos. 23-1 to 23-109. Document:  Piper SB No. 134.\n\nCompliance: Forthwith.\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1590},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This is a narrow, technical airworthiness directive targeting a specific mechanical defect on a discrete subset of aircraft. The scope remains precisely limited to the main landing gear attachment modification as originally issued."},"complexity_factors":["Single-issue directive with no conditional logic","Applicability limited to specific serial number range only","No defined terms or interpretation section","Single compliance action referencing only a manufacturer service bulletin","No exceptions, exemptions, or nested provisions"],"plain_english_summary":"This is a **safety order** (called an Airworthiness Directive) issued by Australia's aviation safety regulator. It requires owners or operators of specific Piper PA-23 Apache and Aztec aeroplanes—those with serial numbers 23-1 through 23-109—to **modify the main landing gear attachment points immediately**.\n\nThe work must be carried out in accordance with **Piper Service Bulletin No. 134**. This directive addresses a structural safety concern with how the main landing gear attaches to the airframe on these early-production aircraft.\n\n**Who does this affect?**\n- Owners and operators of Piper PA-23 aircraft with serial numbers 23-1 to 23-109\n- Licensed aircraft maintenance engineers servicing these planes\n\n**What must be done?**\nThe modification set out in Piper Service Bulletin No. 134 must be completed immediately ('forthwith') to ensure the landing gear attachment points meet current safety standards."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-23-5-main-landing-gear-attachment-points-modification","history":"/api/acts/ad-pa-23-5-main-landing-gear-attachment-points-modification/history","analysis":"/api/acts/ad-pa-23-5-main-landing-gear-attachment-points-modification/analysis","conflicts":"/api/acts/ad-pa-23-5-main-landing-gear-attachment-points-modification/conflicts","importantCases":"/api/acts/ad-pa-23-5-main-landing-gear-attachment-points-modification/important-cases","documents":"/api/acts/ad-pa-23-5-main-landing-gear-attachment-points-modification/documents"}}