{"id":"F2006B04917","name":"AD/CESSNA 150/19 - Seat Frame","slug":"ad-cessna-150-19-seat-frame","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44761,"registerId":"commonwealth-F2006B04917-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 150/19 - Seat Frame","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)  Cessna 150, F150, 152 & F152 Series Aeroplanes\n\n \n\nAD/CESSNA 150/19 Seat Frame 3/71\n\nApplicability: All models with S/Nos. 15071129 to 15072003, A15000001 to A15000177, F15000530 to F15000698, FA15000001 to FA15000081.\n\n \n\nRequirement: Action in accordance with Cessna SL No. SE70-30. Compliance:  Within 100 hours time in service after 31 March 1971.\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":2368},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive remains focused on its original purpose: addressing seat frame airworthiness issues in specific Cessna models. There is no evidence of scope creep into unrelated aircraft systems or models."},"complexity_factors":["Single, clear requirement referencing an external standard (Cessna SL No. SE70-30)","Limited applicability defined by specific aircraft serial numbers only","Simple compliance metric (100 hours time in service)","Very short length with no conditional logic or exceptions"],"plain_english_summary":"**What it does:** This Airworthiness Directive (AD) mandates a safety inspection or repair of seat frames on specific Cessna aircraft models. Owners and operators must follow the manufacturer's instructions in Cessna Service Letter SE70-30.\n\n**Who it affects:** Owners and operators of Cessna 150, F150, 152, and F152 aircraft with specific serial numbers (ranging from 15071129 to 15072003, A15000001 to A15000177, F15000530 to F15000698, and FA15000001 to FA15000081).\n\n**What you must do:** Carry out the maintenance actions described in Cessna Service Letter SE70-30. This typically involves inspecting and possibly reinforcing or replacing seat frame components to ensure they don't fail in flight.\n\n**When:** The work must be completed within 100 hours of flight time accumulated after 31 March 1971.\n\n**Why it matters:** Faulty seat frames can break during flight, potentially causing loss of aircraft control or serious injury to occupants. This directive ensures these critical structural components remain safe."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-150-19-seat-frame","history":"/api/acts/ad-cessna-150-19-seat-frame/history","analysis":"/api/acts/ad-cessna-150-19-seat-frame/analysis","conflicts":"/api/acts/ad-cessna-150-19-seat-frame/conflicts","importantCases":"/api/acts/ad-cessna-150-19-seat-frame/important-cases","documents":"/api/acts/ad-cessna-150-19-seat-frame/documents"}}