{"id":"F2006B07489","name":"AD/TSA-600/24 - Nose Landing Gear Support Structure - Inspection and Modification","slug":"ad-tsa-600-24-nose-landing-gear-support-structure-inspection-and-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":49937,"registerId":"commonwealth-F2006B07489-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/TSA-600/24 - Nose Landing Gear Support Structure - Inspection and 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)  Aerostar (Piper/Ted Smith) 600 and 700 Series Aeroplanes\n\n \n\nAD/TSA-600/24  Nose Landing Gear Support Structure - Inspection and Modification\n\n\n2/80\n\n \n\nApplicability: All models 600A, 601B and 601P with airframe sequence numbers 0611 to 0714. Document:               Piper SB No. SB600-82, Rev. A.\n\nCompliance: Initially inspect within 10 hours time in service after 17 January 1980 and thereafter as per Requirement Document until modified.\n\n \n\nBackground: The manufacturer has received reports of cracking in the N.L.G. drag brace support structure of those Aerostars equipped with “Wiebel” N.L.G.\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":1775},"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is a targeted safety directive addressing a specific mechanical defect (cracking in nose landing gear support) reported by the manufacturer. The scope remains precisely focused on the affected aircraft models and the required remedial action."},"complexity_factors":["Requires cross-reference to external technical document (Piper Service Bulletin SB600-82, Rev. A)","Specific applicability limited to defined model numbers and airframe serial number range (0611-0714)","Technical aviation terminology ('time in service', 'drag brace support structure', 'Wiebel N.L.G.')","Two-phase compliance requirement (initial inspection plus recurring inspections until modification)"],"plain_english_summary":"This directive mandates **safety inspections and repairs** for specific **Piper Aerostar aircraft** to prevent landing gear failure.\n\n**Who is affected:**\nOwners and operators of Aerostar models **600A, 601B, and 601P** with serial numbers between **0611 and 0714** that are equipped with a \"Wiebel\" nose landing gear system.\n\n**What must be done:**\n*   **Initial inspection:** Check the nose landing gear drag brace support structure for cracking within **10 hours of flight time** after 17 January 1980\n*   **Ongoing monitoring:** Continue inspections as specified in the manufacturer's Service Bulletin (SB600-82) until the aircraft is permanently modified\n\n**Why it matters:**\nThe manufacturer discovered **cracks developing in the landing gear support structure**. If left unaddressed, this could cause the nose landing gear to fail during landing, posing serious safety risks."}},"importantCases":[],"_links":{"self":"/api/acts/ad-tsa-600-24-nose-landing-gear-support-structure-inspection-and-modification","history":"/api/acts/ad-tsa-600-24-nose-landing-gear-support-structure-inspection-and-modification/history","analysis":"/api/acts/ad-tsa-600-24-nose-landing-gear-support-structure-inspection-and-modification/analysis","conflicts":"/api/acts/ad-tsa-600-24-nose-landing-gear-support-structure-inspection-and-modification/conflicts","importantCases":"/api/acts/ad-tsa-600-24-nose-landing-gear-support-structure-inspection-and-modification/important-cases","documents":"/api/acts/ad-tsa-600-24-nose-landing-gear-support-structure-inspection-and-modification/documents"}}