{"id":"F2006B03912","name":"AD/BEECH 400/10 - Cabin Seat Frames","slug":"ad-beech-400-10-cabin-seat-frames","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43521,"registerId":"commonwealth-F2006B03912-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 400/10 - Cabin Seat Frames","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nBeechcraft 400 Series Aeroplanes\n\nAD/BEECH 400/10 Cabin Seat Frames 5/95\n\nApplicability: Beech Model 400A aircraft serial numbers RK-1 to RK-40 inclusive and RK-45 equipped with Tosington Cabin Seat frames having serial numbers prior to 5606 on which Modification Kit 303-307 has not been installed.\n\nRequirement: 1\\. Visually inspect for cracks in the forward and aft lower seat frame members at the bushings in the area adjacent to the ends of both bearing shafts in accordance with Tosington Enterprises Service Bulletin 001, Revision 1.\n\nIf cracking is found, repair in accordance with Tosington Enterprises Service Bulletin 001, Revision 1.\n\n2. Check and measure the gap between the bearing shafts and the forward and aft lower seat frame members. Rectify gaps by shimming with AN960-516 (or equivalent) washers. Check, measure and rectify in accordance with Tosington Enterprises Service Bulletin 001, Revision 1.\n\nNote: FAA AD 94-05-09 refers.\n\nCompliance: Action in accordance with Requirements 1 and 2 within 200 hours time in service from 27 April 1995.\n\nBackground: Reports have been received of cracking of the lower seat frames. The cracking is due, in part, to gaps existing between the seat frame and the bearing shafts. This AD will inspect for cracks and rectify any gaps found.","sortOrder":0}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is a discrete airworthiness directive addressing a specific safety defect in specific aircraft. It has not expanded beyond its original purpose of addressing cracking in Tosington cabin seat frames on affected Beechcraft 400A aircraft."},"complexity_factors":["Narrow applicability criteria requiring cross-checking of aircraft serial numbers, seat frame serial numbers, and modification kit installation status","Two distinct technical requirements (visual inspection and gap measurement/shimming) with specific reference to external technical document (Tosington Enterprises Service Bulletin 001, Revision 1)","Cross-reference to FAA AD 94-05-09 for additional context","Time-based compliance deadline (200 hours time in service from specific date) requiring flight hour tracking"],"plain_english_summary":"This airworthiness directive applies to certain Beechcraft Model 400A aircraft fitted with Tosington cabin seats (serials below 5606, specific airframe serials unless Modification Kit 303‑307 is already installed). Owners/operators must inspect lower seat frame members for cracks and measure/fix gaps at the bearing shafts, using Tosington Service Bulletin 001 Rev.1 and required washers, within 200 flight hours after 27 April 1995. It prevents in‑flight seat‑frame failure and potential passenger injury."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive targets reported cracking in lower seat frames and mandates inspection and rectification for the specifically listed aircraft and frame serials; it implements the corrective measures described in the source without broadening or narrowing the stated subject beyond those aircraft and conditions."},"complexity_factors":["Narrow applicability limited to specific Beech 400A serial numbers and Tosington seat-frame serials prior to 5606","Technical, hands-on inspections for cracks at bushing locations (visual inspection requirement)","Measurement and remedial action requirement (shimming with specified washer AN960-516 or equivalent)","Repair actions delegated to procedures in an external document (Tosington Service Bulletin 001 Rev 1)","Fixed compliance window (200 hours time in service from a set date)","Reference to an associated FAA AD (coordination with foreign authority guidance)"],"plain_english_summary":"This airworthiness directive requires operators of specified Beech Model 400A aircraft fitted with Tosington cabin seat frames (frames with serials prior to 5606 and no Modification Kit 303-307) to inspect lower seat-frame members for cracks and to measure and fix gaps between bearing shafts and the frame by shimming or repair, following Tosington Service Bulletin 001 Revision 1. Work must be completed within 200 hours time-in-service from 27 April 1995. Operators bear the cost and must follow the service bulletin’s technical steps."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-400-10-cabin-seat-frames","history":"/api/acts/ad-beech-400-10-cabin-seat-frames/history","analysis":"/api/acts/ad-beech-400-10-cabin-seat-frames/analysis","conflicts":"/api/acts/ad-beech-400-10-cabin-seat-frames/conflicts","importantCases":"/api/acts/ad-beech-400-10-cabin-seat-frames/important-cases","documents":"/api/acts/ad-beech-400-10-cabin-seat-frames/documents"}}