{"id":"F2006B07697","name":"Airworthiness Directives 2004 - Revocation and Remaking - Aerospatiale (Socata) TB20 (Trinidad) Series Aeroplanes","slug":"airworthiness-directives-2004-revocation-and-remaking-aerospatiale-socata-tb20-trinidad-series-aerop","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50391,"registerId":"commonwealth-F2006B07697-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"Airworthiness Directives 2004 - Revocation and Remaking - Aerospatiale (Socata) TB20 (Trinidad) Series Aeroplanes","content":"Airworthiness Directives 2004\n\nI, DAVID ALAN VILLIERS, delegate of the Civil Aviation Safety\n\nAuthority, acting under subregulation 39.001 (1) of the Civil\n\nAviation Safety Regulations 1998:\n\n(a) revoke the Airworthiness Directives mentioned in\n\nSchedule 1; and\n\n(b) make, as separate instruments, each Airworthiness\n\nDirective mentioned in Schedule 1 and attached.\n\n![](image.001.png)\n\nDavid Villiers\n\nDelegate of the Civil Aviation Safety Authority\n\n20 December 2004\n\nNote: Each attached Airworthiness Directive is being re-made in exactly the\n\nsame form as appears in the latest published edition of the Directive.\n\n  \nSchedule 1 Revocation and Remaking of\n\nAirworthiness Directives\n\nAerospatiale (Socata) TB20 (Trinidad) Series Aeroplanes\n\nAD Name AD Number\n\nEngine Mount - Inspection/Replacement AD/TB20/1\n\nLanding Gear Micro Switches - Adjustment AD/TB20/2\n\nElevator/Elevator Tab Control Attachment Inspection and Modification AD/TB20/3\n\nWing Drainage - Modification AD/TB20/4\n\nBattery Tray Installation AD/TB20/5\n\nAutopilot Pitch Servo Cable Guards AD/TB20/6\n\nStabilator Control Rod Ends AD/TB20/7\n\nAileron Balance Weight Attachment AD/TB20/8\n\nMain Landing Gear Bay AD/TB20/9\n\nNose Landing Gear Hydraulic Line AD/TB20/10\n\nHydraulic Brake Line Clearance AD/TB20/11\n\nFuselage Frame 9 AD/TB20/12 Amdt 1\n\nFuel Tanks AD/TB20/13 Amdt 1\n\nFuselage Frame NR 0 - Firewall AD/TB20/14 Amdt 1\n\nLanding Gear Articulated Stays AD/TB20/15 Amdt 2\n\nNose Landing Gear Lever Adjusting Screws AD/TB20/16\n\nFront Seat Safety Belts AD/TB20/17 Amdt 1\n\nFuel System AD/TB20/18\n\nOil Cooler Inlet and Outlet Elbows AD/TB20/19\n\nHorizontal Stabiliser Balance Weight AD/TB20/20\n\nPropeller Deicing Electrical Circuit Protection AD/TB20/21\n\nCabin Door Catch AD/TB20/22 Amdt 1\n\nConsole Attachment AD/TB20/23\n\nFuel Tank Outlet Filter AD/TB20/24\n\nAutopilot Master Switch AD/TB20/25\n\nRudder Balance Weight AD/TB20/26 Amdt 3\n\nExhaust System Clap Locknuts AD/TB20/27 Amdt 2\n\nFront Seats AD/TB20/28 Amdt 1\n\nAirworthiness Limitations AD/TB20/29\n\n  \nFuel Tank Internal Ribs AD/TB20/30\n\nMain Landing Gear AD/TB20/31\n\nMLG Hinged Strut Attachment Bearings AD/TB20/32 Amdt 1\n\nUpper Attachment of Front Seat Belts AD/TB20/33\n\nVertical Stabiliser Forward Junction Doubler AD/TB20/34 Amdt 1\n\nFuel System AD/TB20/35\n\nPropeller Governor Control AD/TB20/36\n\nRudder Bearing AD/TB20/37\n\nSeat Unlocking AD/TB20/38\n\nNose Gear Fork AD/TB20/39\n\nAmmeter Electrical Circuit AD/TB20/40\n\nAileron and Elevator Control Gimbal Joint AD/TB20/41 Amdt 2\n\nNose and Main Landing Gear Actuator AD/TB20/42\n\nPitch Trim Actuator Seals AD/TB20/43\n\nMLG Hinged Strut AD/TB20/44","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":5,"scope_assessment":{"changed":false,"description":"No substantive change to scope or requirements. The delegate expressly revokes the listed ADs and re-makes each ‘in exactly the same form as appears in the latest published edition of the Directive’ (Note). The instrument performs an administrative re-issuance rather than altering coverage or obligations."},"complexity_factors":["Large number of directives listed (AD/TB20/1 through AD/TB20/44) increases administrative scope and need to consult multiple instruments (Schedule 1).","Technical subject matter: AD titles show inspections, replacements, adjustments and modifications, which require technical compliance by aircraft maintenance personnel (Schedule 1 entries).","Legal formality: instrument operates by revocation and remaking under subregulation 39.001(1), an administrative procedure rather than substantive amendment (first paragraph).","Fragmentation: each AD is re-made as a separate instrument, increasing record-keeping and tracking obligations for regulators and operators (paragraph (b)).","Versioning: several ADs carry amendment numbers (e.g. Amdt 1, Amdt 2, Amdt 3), introducing history/version complexity for compliance checks (Schedule 1 entries).","Limited substance in this instrument: the substantive requirements remain in the attached ADs, so users must retrieve each re-made AD to determine specific obligations (Note).","Compliance burden is concentrated on owners/operators and maintenance organisations who must follow multiple technical ADs; the instrument itself centralises the administrative act of remaking them (paragraphs (a)–(b))."],"plain_english_summary":"This instrument revokes and re-makes, as separate instruments, a set of Airworthiness Directives (ADs) that apply to Aerospatiale (Socata) TB20 (Trinidad) series aeroplanes. Acting under subregulation 39.001(1), the delegate lists AD/TB20/1–AD/TB20/44 and states each attached AD is re-made in exactly the same form as the latest published edition. Owners and operators of TB20 aeroplanes remain responsible for complying with the inspection, modification or replacement requirements in those ADs, which entails technical and administrative costs."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"The legislation maintains its original scope. It is purely administrative — revoking and remaking existing Airworthiness Directives without expanding, contracting, or altering their substantive safety requirements. The scope remains limited to the specific aircraft type (Socata TB20 Trinidad series) and the specific ADs listed in Schedule 1."},"complexity_factors":["Single, clear purpose: revocation and remaking of existing instruments","No substantive amendments to the attached ADs (explicitly stated as 'exactly the same form')","Straightforward structure: preamble, signature, explanatory note, and schedule","Schedule consists of a simple table with 44 entries (AD names and numbers only)","No defined terms section, no conditional logic, no nested exceptions","Minimal cross-referencing (only to subregulation 39.001(1) of CASR 1998 and Schedule 1)","Relies on external documents (the attached ADs) but does not reproduce their technical content"],"plain_english_summary":"This instrument revokes and immediately reissues 44 existing Airworthiness Directives for Aerospatiale (Socata) TB20 (Trinidad) aeroplanes, reproducing each AD exactly as previously published. It’s a housekeeping action by CASA (via its delegate) to give each AD a standalone legal basis without changing any safety requirements.\n\nWho it affects: TB20 owners/operators, maintenance engineers and businesses servicing these aircraft — no practical change to obligations."},"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"}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-aerospatiale-socata-tb20-trinidad-series-aerop","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-aerospatiale-socata-tb20-trinidad-series-aerop/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-aerospatiale-socata-tb20-trinidad-series-aerop/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-aerospatiale-socata-tb20-trinidad-series-aerop/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-aerospatiale-socata-tb20-trinidad-series-aerop/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-aerospatiale-socata-tb20-trinidad-series-aerop/documents"}}