{"id":"F2006B06936","name":"AD/SEATS/8 Amdt 2 - Sicma Seat - Aft Track Fittings","slug":"ad-seats-8-amdt-2-sicma-seat-aft-track-fittings","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114826,"registerId":"commonwealth-F2006B06936-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SEATS/8 Amdt 2 - Sicma Seat - Aft Track Fittings","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 107 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nSeats and Berths\n\nAD/SEATS/8\n\nAmdt 2\n\n  \nSicma Seat \\- Aft Track Fittings 13/99\n\nApplicability: SICMA AERO SEAT passenger seats equipped with SICMA aft track fittings part numbers 90-000120-790-0 (affected seat part numbers are listed at Annex 1 of SICMA AERO SEAT Service Bulletin 90-25-005R1) and 90-000123-790-0\n\n(see Note 1.).\n\nRequirement: 1. Check the locking of the aft track fitting part number 90-000120-790-0 in accordance with the requirements of SICMA AERO SEAT Alert Service Bulletin A90-25-002 Revision A.\n\n    2. a. Modify the aft track fitting part number 90-000120-790-0 in accordance with the technical requirements of SICMA AERO SEAT Service Bulletin 90-25- 005R1 or later Revision; and\n\nb. record accomplishment of the modification by stamping each seat identification plate in accordance with the instructions contained in the SB 90-25-005R1 or later Revision.\n\n    3. Discard tab locks P/N 00-4399 and replace with new items in accordance with Service Bulletin SICMA AERO SEAT 90-25-005 Revision (Issue) 2.\n\nNotes:\n\n    After modification, (Requirement 1 and 2) the aft track fitting part number 90- 000120-790-0 becomes 90-000123-790-0.\n\n    2. The following service bulletins are equivalent to SB 90-25-005R1:\n\n| 42-25-001 | 50-25-001 | 63-25-004 | 65-25-001 |\n| --------- | --------- | --------- | --------- |\n| 71-25-012 | 78-25-001 | 85-25-001 | 91-25-001 |\n| 83-25-001 | 92-25-001 | 93-25-001 | 90-25-004 |\n\nThese service bulletins have the same technical instructions. The only differences are serial numbers of seats and associated operators.\n\n    3. Replacement of aft track fitting with P/N 90-000125-790-0 in accordance with SICMA AERO SEAT Service Bulletin 90-25-009 is an approved alternative means of compliance with this Directive and is terminating action.\n    4. DGAC AD 94-085 (B)R2 dated July 13, 1999 refers.\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 107 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\nCompliance: 1. Upon accumulation of 600 hours component time in service and thereafter at intervals not to exceed 600 hours component time in service.\n\n    2. Before 30 November 1994, unless one of the Service Bulletins listed at Note 2. has previously been accomplished.\n\n    3. At each seat installation or re-installation after 30 December 1999\\. This Amendment becomes effective on 30 December 1999.\n\nBackground: Reports were received of cases of the seat aft track fitting unlocking from the floor track. The DGAC requires replacement of the current aft track fitting with an improved track fitting with a positive locking system.\n\nAmendment 1 was issued to reflect the revised DGAC AD which introduces the replacement of tab locks and provides an alternate compliance with SB 90-25-009 and became effective on 10 November 1994.\n\nAmendment 2 is issued to permit only one use of the P/N 00-4399 locking tabs.\n\nThe original issue of this Airworthiness Directive became effective on 23 June 1994.","sortOrder":0}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":4,"scope_assessment":{"changed":true,"description":"The original directive addressed a critical safety defect in seat track fittings. Amendment 1 expanded scope to include replacement of tab locks and added an alternative compliance path. Amendment 2 further narrows operational practice by restricting tab lock reuse to single-use only. While still within aviation safety, the directive has accumulated procedural layers (three compliance requirements, multiple equivalent bulletins, alternative terminating actions) that extend beyond the original simple 'fix the fitting' intent."},"complexity_factors":["Multiple compliance deadlines layered across amendments (original 1994, Amendment 1 in 1994, Amendment 2 in 1999)","Cross-references to 12 equivalent service bulletins with different serial numbers for different operators","Three distinct technical actions required (checking, modifying, replacing) with different intervals","Part number tracking complexity (original fitting 90-000120-790-0 becomes 90-000123-790-0 after modification, with alternative 90-000125-790-0 as terminating action)","Conditional logic: 'unless one of the Service Bulletins listed at Note 2 has previously been accomplished'","Reference to foreign aviation authority (DGAC — French civil aviation authority) directive"],"plain_english_summary":"This safety order requires airlines/operators using SICMA passenger seats with specified aft track fittings to inspect and fix a defect that can let seat back fittings unlock and seats come loose. It mandates periodic checks, modification/replacement of the fittings and recording the work. Amendment 2 prohibits reuse: locking tab P/N 00-4399 may be used only once."},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":true,"description":"Yes. The original AD mandated inspection and modification after reports of unlocking. Subsequent amendments (Amendment 1 and Amendment 2) added mandatory replacement of tab locks, recognised an approved alternative terminating action (P/N 90-000125-790-0), and limited reuse of tab locks P/N 00-4399 to one use, thereby expanding and refining operator obligations and recordkeeping requirements."},"complexity_factors":["Multiple referenced part numbers (90-000120-790-0, 90-000123-790-0, 90-000125-790-0) requiring tracking of conversion status","Cross-reference to several SICMA service bulletins and equivalence list (Note 2) for technical instructions","Layered compliance deadlines: recurring 600-hour inspections, a fixed modification deadline (30 Nov 1994), and installation/reinstallation requirement (after 30 Dec 1999)","Presence of an approved alternative means of compliance (replacement with P/N 90-000125-790-0) and termination provision","Recordkeeping requirement (stamping seat identification plates) creating an administrative compliance burden","Amendment history and the specific restriction on reuse of tab locks P/N 00-4399 (only one use) adds operational nuance"],"plain_english_summary":"This Airworthiness Directive requires inspection and then modification or replacement of SICMA aft-track fittings on specified passenger seats to prevent the fitting unlocking from the aircraft floor track. It applies to seats with part number 90-000120-790-0 (converted to 90-000123-790-0 after modification) and mandates stamping each seat’s identification plate to record the work.\n\nOperators must inspect fittings every 600 component hours, complete the modification by 30 November 1994 unless already done, replace tab locks P/N 00-4399 at installation, and may fit P/N 90-000125-790-0 as an approved alternative."}},"importantCases":[],"_links":{"self":"/api/acts/ad-seats-8-amdt-2-sicma-seat-aft-track-fittings","history":"/api/acts/ad-seats-8-amdt-2-sicma-seat-aft-track-fittings/history","analysis":"/api/acts/ad-seats-8-amdt-2-sicma-seat-aft-track-fittings/analysis","conflicts":"/api/acts/ad-seats-8-amdt-2-sicma-seat-aft-track-fittings/conflicts","importantCases":"/api/acts/ad-seats-8-amdt-2-sicma-seat-aft-track-fittings/important-cases","documents":"/api/acts/ad-seats-8-amdt-2-sicma-seat-aft-track-fittings/documents"}}