{"id":"F2006B04250","name":"AD/BEECH 90/61 - Pilot and Co-Pilot Seatback Pan - Modification","slug":"ad-beech-90-61-pilot-and-co-pilot-seatback-pan-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44035,"registerId":"commonwealth-F2006B04250-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 90/61 - Pilot and Co-Pilot Seatback Pan - 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)  Beechcraft 90 and 65-90 (King Air) Series Aeroplanes\n\n \n\nAD/BEECH 90/61 Pilot and Co-Pilot Seatback Pan - Modification 7/81\n\nApplicability: All models C90 with S/Nos. LJ-803 to LJ-956. All models E90 with S/Nos. LW-301 to LW-347. All models F90 with S/Nos. LA-2 to LA-125.\n\n \n\nDocument: Beechcraft SI No. 1176.\n\n \n\nCompliance: Unless already accomplished, within 100 hours’ time in service after 31 July 1981.\n\n \n\nBackground:  There is a possibility that the shoulder harness could jam and cause slack in the assembly due to insufficient clearance in the seat structure.\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":2088},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow scope: mandating a specific physical modification to address a identified safety defect (shoulder harness jamming) in defined aircraft models. No evidence of scope expansion beyond the original airworthiness concern."},"complexity_factors":["Single compliance requirement based on flying hours (100 hours time-in-service)","Limited applicability restricted to three specific aircraft models with defined serial number ranges","No cross-references to other legislation or conditional exceptions","Single external technical reference (Beechcraft Service Instruction No. 1176)","Short document length with no defined terms section"],"plain_english_summary":"This airworthiness directive mandates a physical modification to pilot and co‑pilot seats on certain Beechcraft King Air Model C90, E90, and F90 aircraft (specific serial ranges) to stop the shoulder harness from jamming against the seatback pan. Owners/operators must install the change per Beechcraft Service Instruction No. 1176 within 100 hours time‑in‑service after 31 July 1981. It prevents slacked harnesses that could cause serious head or upper‑body injuries."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-90-61-pilot-and-co-pilot-seatback-pan-modification","history":"/api/acts/ad-beech-90-61-pilot-and-co-pilot-seatback-pan-modification/history","analysis":"/api/acts/ad-beech-90-61-pilot-and-co-pilot-seatback-pan-modification/analysis","conflicts":"/api/acts/ad-beech-90-61-pilot-and-co-pilot-seatback-pan-modification/conflicts","importantCases":"/api/acts/ad-beech-90-61-pilot-and-co-pilot-seatback-pan-modification/important-cases","documents":"/api/acts/ad-beech-90-61-pilot-and-co-pilot-seatback-pan-modification/documents"}}