{"id":"F2006B03452","name":"AD/B767/99 Amdt 1 - Seat Track Alignment","slug":"ad-b767-99-amdt-1-seat-track-alignment","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43006,"registerId":"commonwealth-F2006B03452-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B767/99 Amdt 1 - Seat Track Alignment","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)  \nBoeing 767 Series Aeroplanes\n\nAD/B767/99\n\nAmdt 1\n\n  \nSeat Track Alignment 6/98\n\nApplicability: Model 767 series aircraft equipped with non-powered IPECO pilot’s seats; and having line position numbers 1 through 642.\n\nRequirement: Perform a one-time operational test of the pilot’s seats and the seat locks to determine that the lock pin of the seat track fully engages in all lock positions of the seat track, in accordance with Boeing Service Bulletin 767-25-0244, or Revision 1, dated 15 January 1998.\n\n    If the seat lock pin fully engages in all lock positions of the seat track, no further action is required.\n\n    b. If the seat lock pin does not fully engage in all positions of the seat track, re- align the seat tracks in accordance with Boeing Service Bulletin 767-25-0244, or Revision 1, dated 15 January 1998.\n\nNote: FAA AD 98-03-10 Amdt 39-10302 refers.\n\nCompliance: Unless already accomplished, before 21 August 1998\\. This amendment becomes effective on 21 May 1998.\n\nBackground: The FAA received reports indicating that a pilot’s seat slid from the forward position to the aft-most position during acceleration and take-off of the aircraft due to misalignment of the seat tracks. Such misalignment of the seat tracks, if not corrected, could result in uncommanded movement of the pilots’ crew seats, and consequent reduced controllability of the aircraft.\n\nAmendment 1 is issued in response to a new FAA AD which revises the applicability of the existing FAA AD.\n\nThe original issue of this Airworthiness Directive became effective on 6 November 1997.","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"},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":true,"description":"Amendment 1 revises the AD's applicability. The instrument specifies applicability to Model 767 aircraft equipped with non‑powered IPECO pilot seats and line positions 1–642, reflecting the revised scope set out in the corresponding FAA AD."},"complexity_factors":["Narrow technical applicability: specific to non‑powered IPECO pilot seats and line positions 1–642","One‑time operational test with a binary pass/fail outcome","Required corrective action (seat track realignment) referenced to an external Boeing Service Bulletin","Fixed compliance deadline (21 August 1998) and effective date (21 May 1998)","Dependence on maintenance access to cockpit seats and potential labour/parts costs for realignment","Cross‑reference and alignment with FAA AD (regulatory dependency)","Safety‑critical consequence if noncompliant (seat movement affecting controllability)","Limited ongoing administrative burden (single inspection rather than continual checks)"],"plain_english_summary":"This Airworthiness Directive requires operators of Boeing 767 aeroplanes fitted with non-powered IPECO pilot seats (line positions 1–642) to perform a one‑time operational test of the pilot seats and seat locks and, if a lock pin fails to fully engage, to re‑align the seat tracks using Boeing Service Bulletin 767‑25‑0244 (or Revision 1). Compliance is due by 21 August 1998. Operators pay for the inspection and any corrective work; maintenance personnel must follow the specified service bulletin. The action responds to reported in‑flight seat movement that could reduce controllability."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":true,"description":"The amendment expands the scope by revising which aircraft are covered ('applicability'). The original directive from November 1997 has been updated to include more (or different) aircraft based on a new FAA Airworthiness Directive, indicating the safety concern affected a broader range of planes than initially identified."},"complexity_factors":["Single specific aircraft model and seat type targeted","Simple binary compliance path (test passes = done, test fails = fix it)","Only 2 defined applicability criteria (seat type and line position numbers)","Clear single deadline for compliance","References only one external technical document (Boeing Service Bulletin)","No nested exceptions or conditional logic beyond the pass/fail test"],"plain_english_summary":"This FAA safety order requires one-time inspections of specific non-powered IPECO pilot seats on early-production Boeing 767s (line numbers 1–642) to verify the seat lock pin engages at every track position and, if not, to realign the seat tracks. It affects airlines and maintenance crews operating those aircraft. The rule stems from an incident where a misaligned track let a pilot’s seat slide backward during takeoff, creating a serious control hazard."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b767-99-amdt-1-seat-track-alignment","history":"/api/acts/ad-b767-99-amdt-1-seat-track-alignment/history","analysis":"/api/acts/ad-b767-99-amdt-1-seat-track-alignment/analysis","conflicts":"/api/acts/ad-b767-99-amdt-1-seat-track-alignment/conflicts","importantCases":"/api/acts/ad-b767-99-amdt-1-seat-track-alignment/important-cases","documents":"/api/acts/ad-b767-99-amdt-1-seat-track-alignment/documents"}}