{"id":"F2006B08041","name":"Airworthiness Directives 2004 - Revocation and Remaking - Turbomeca Turbine Engines - Arriel Series","slug":"airworthiness-directives-2004-revocation-and-remaking-turbomeca-turbine-engines-arriel-series","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115117,"registerId":"commonwealth-F2006B08041-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"Airworthiness Directives 2004 - Revocation and Remaking - Turbomeca Turbine Engines - Arriel Series","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\nTurbomeca Turbine Engines - Arriel Series\n\nAD Name AD Number\n\nLife Limits - Engine Rotating Parts - CANCELLED AD/ARRIEL/1 Amdt 1\n\nMagnetic Plug Inspection and In-Flight Pressure Monitoring - CANCELLED AD/ARRIEL/2\n\nFree Turbine Containment Shield AD/ARRIEL/3 Amdt 2\n\nTurbine Case Identification Plate Removal AD/ARRIEL/4\n\nGas Generator Rear Bearing Oil Pipe AD/ARRIEL/5\n\nErosive Atmosphere Maintenance AD/ARRIEL/6 Amdt 1\n\nModule 5 Intermediate Pinion AD/ARRIEL/7 Amdt 1\n\n2nd Stage Turbine Nozzle Guide Vanes - CANCELLED AD/ARRIEL/8\n\nOverspeed Sensor AD/ARRIEL/9\n\n2nd Stage Turbine Nozzle Guide Vanes AD/ARRIEL/10\n\nGas Generator Rear Bearing Chip Detector AD/ARRIEL/11\n\nPower Turbine Nozzle Inspection AD/ARRIEL/12\n\nCentrifugal Compressor Inspection - CANCELLED AD/ARRIEL/13\n\nCentrifugal Impeller AD/ARRIEL/14 Amdt 1\n\nCentrifugal Impeller AD/ARRIEL/15\n\nGas Generator 2nd Stage Turbine Blades AD/ARRIEL/16\n\nEngine - Gas Generator Second Stage Turbine AD/ARRIEL/17\n\n2nd Stage Nozzle Guide Vanes AD/ARRIEL/18 Amdt 1\n\nAcceleration controller axle of the fuel metering unit AD/ARRIEL/19","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This instrument maintains the exact same scope as the original directives. The note explicitly states each directive is being re-made 'in exactly the same form as appears in the latest published edition.' This is a procedural remaking exercise, not an expansion of regulatory scope."},"complexity_factors":["Single-purpose instrument with straightforward structure (revocation + remaking)","Only 19 items in schedule, mostly presented as a simple table","No nested conditional logic or complex cross-referencing within the instrument itself","However, each attached directive (not fully reproduced here) likely contains detailed technical specifications, compliance timeframes, and serial number applicability that would increase complexity if analysed individually","References external regulations (Civil Aviation Safety Regulations 1998, subregulation 39.001(1)) without extensive elaboration"],"plain_english_summary":"This instrument revokes and reissues 19 airworthiness directives for Turbomeca Arriel turbine engines, effectively remaking them as fresh legal instruments in the same form. It affects owners/operators, maintenance organisations and CASA, while preserving existing safety requirements as a housekeeping update. Three of the listed directives are cancelled outright; the rest continue to mandate inspections, life limits, oil/chip monitoring and related safety measures."},"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":false,"description":"Scope unchanged: the instrument revokes listed ADs and remakes each in exactly the same form as the latest published edition (per the instrument's note), so substantive obligations and technical requirements imposed by the ADs remain the same."},"complexity_factors":["Administrative re-issuance of multiple existing ADs (list of items in Schedule 1) — low legal complexity but operational tracking required by operators.","Delegated legal authority: action taken under subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998 (delegate discretion to revoke/remake instruments).","Attachments and cross-references: each AD is remade as a separate instrument and attached, creating document-management and version-control costs for operators and regulators.","No substantive content change (note states ADs are remade in identical form), so compliance obligations persist unchanged — ongoing cost for operators rather than new technical requirements.","Cancellation/amendment annotations in Schedule 1 (e.g. 'CANCELLED', 'Amdt') require careful interpretation by maintenance organisations and may cause administrative confusion during transition."],"plain_english_summary":"This instrument, made by a CASA delegate under subregulation 39.001(1), revokes a list of Airworthiness Directives (ADs) for Turbomeca Arriel turbine engines and re-issues each AD as a separate instrument in the same form as the latest published edition. It affects aircraft operators and maintenance organisations required to follow those ADs (they bear inspection, maintenance and compliance costs). The CASA delegate exercises the decision to revoke and remake the ADs; the substantive technical requirements remain unchanged."}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-turbomeca-turbine-engines-arriel-series","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-turbomeca-turbine-engines-arriel-series/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-turbomeca-turbine-engines-arriel-series/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-turbomeca-turbine-engines-arriel-series/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-turbomeca-turbine-engines-arriel-series/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-turbomeca-turbine-engines-arriel-series/documents"}}