{"id":"F2006B07882","name":"Airworthiness Directives 2004 - Revocation and Remaking - General Electric Turbine Engines - CF6 Series","slug":"airworthiness-directives-2004-revocation-and-remaking-general-electric-turbine-engines-cf6-series","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50879,"registerId":"commonwealth-F2006B07882-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 - General Electric Turbine Engines - CF6 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\nGeneral Electric Turbine Engines - CF6 Series\n\nAD Name AD Number\n\nCF6-50 Life Limits - Engine Components - CANCELLED AD/CF6/1 Amdt 1\n\nCF6-80 Life Limits - Engine Components - CANCELLED AD/CF6/2 Amdt 1\n\nFirst Stage High Pressure Turbine Discs - CANCELLED AD/CF6/3\n\nHigh Pressure Turbine Rotor Spacer/Impeller Inspection Requirements - AD/CF6/4\n\nFuel Supply Manifold AD/CF6/5\n\nFirst Stage High Pressure Turbine Disc Embossment Radii AD/CF6/6\n\nFirst Stage High Pressure Turbine Disc Embossment Radii AD/CF6/7\n\nLow Pressure Turbine Cooling Air Manifold AD/CF6/8\n\nHigh Pressure Turbine Impeller Spacer Eddy Current Inspection AD/CF6/9\n\nFuel Manifold AD/CF6/10 Amdt 1\n\nHigh Pressure Turbine Rotor - Stage 2 Disc Forward Embossment Inner AD/CF6/11\n\nTurbine Mid Frame Aft Circumferential Weld AD/CF6/12 Amdt 2\n\nAccessory Compartment Fire Shields AD/CF6/13\n\nHigh Pressure Turbine Discs AD/CF6/14\n\nHigh Pressure Compressor Rear Shaft Bolt Hole AD/CF6/15 Amdt 2\n\nFuel Manifold Support Bracket AD/CF6/16\n\nStage 1 Fan Rotor Disc AD/CF6/17\n\nHigh Pressure Turbine Inspection and Improved Shroud Cooling AD/CF6/18\n\nHigh Pressure Compressor Rotor Inertia Weld AD/CF6/19\n\nHigh Pressure Compressor Rotor Stages 11 to 14 Vane to Spool Rubs AD/CF6/20\n\nEddy Current Inspection of High Pressure Turbine Thermal Shields AD/CF6/21\n\nFuel Manifold Inspection and Replacement AD/CF6/22\n\nHigh Pressure Turbine Rotor Stage 1 Disc/Shaft Inspection and Removal From AD/CF6/23\n\nHigh Pressure Compressor Rotor Spools Stages 3 to 9 - CANCELLED AD/CF6/24 Amdt 2\n\nFan Disks - Removal From Service AD/CF6/25\n\nStage 11 to 13 Compressor Spool Inspection AD/CF6/26\n\nHigh Pressure Turbine Thermal Shield Inspection AD/CF6/27\n\nCF6-80C2 Stage 1 High Pressure Turbine Disc Inspection AD/CF6/28\n\nHigh Pressure Turbine - Stage 1 Disc Rim Bolt Holes and Stage 2 Disc Rim and AD/CF6/29 Amdt 1\n\n  \nCF6-80A Stage 1 High Pressure Turbine Disc Inspection AD/CF6/30\n\nFan Stator Case Stiffening Ring and Stage 1 Fan Shroud AD/CF6/31\n\nOil Quantity and Flame Arrestor Plug AD/CF6/32\n\nHPT Stage 2 Disk Life Limits AD/CF6/33\n\nFan Reverser Centre Drive Unit AD/CF6/34\n\nCompressor Rear Frame Midflange AD/CF6/35\n\nForward Engine Mount Assembly AD/CF6/36\n\nHigh Pressure Compressor Rotor (HPCR) Stages 3-9 - Replacement AD/CF6/37\n\nStage 1 Fan Disk Inspection AD/CF6/38\n\nAccessory Gearbox Idler Adaptor - Inspection AD/CF6/39\n\nFan Mid Shaft AD/CF6/40\n\nHigh Pressure Compressor 3-9 Spool - CANCELLED AD/CF6/41 Amdt 1\n\nInspection of Critical Life-limited Rotating Engine Components - CANCELLED AD/CF6/42\n\nHigh Pressure Compressor 3-9 Spool - CANCELLED AD/CF6/43 Amdt 1\n\nHigh Pressure Turbine Disk - Stage 1 - CANCELLED AD/CF6/44\n\nFuel Tube Replacement AD/CF6/45\n\nInspection of Life Limited Parts AD/CF6/46\n\nLow Pressure Turbine Shaft - Life Limit AD/CF6/47\n\nNozzle Guide Vanes AD/CF6/48 Amdt 1\n\nHigh Pressure Compressor 3-9 Spool - Inspection AD/CF6/49\n\nHigh Pressure Turbine - Inspection - CANCELLED AD/CF6/50\n\nLPT Shroud - Replacement AD/CF6/51\n\nThrust Reverser - Inspection AD/CF6/52\n\nForward Engine Mount Platforms AD/CF6/53\n\nHigh Pressure Turbine Disc AD/CF6/54\n\nVertical Link And Pylon Attachment Bolts AD/CF6/55\n\nHP Stage 1 Turbine Discs AD/CF6/56\n\nHPT S2 NGV Distress AD/CF6/57","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"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"Scope was not substantively changed: the instrument expressly revokes listed ADs and re-makes each 'in exactly the same form as appears in the latest published edition' (instrument note). The measure is an administrative re-issuance under subregulation 39.001(1), so affected parties retain the same compliance obligations while the official citation and record location of each AD are updated."},"complexity_factors":["Administrative nature: instrument revokes and re-issues ADs without substantive change (note in text).","Large number of individual ADs listed (multiple entries, some cancelled or amended), increasing record-keeping and tracking burden for operators.","Technical subject-matter (engine parts and inspections) creates operational complexity for affected maintenance organisations even if legal text is unchanged.","Cross-references to Schedule 1 and the attached separate instruments require users to consult multiple documents to locate the active AD text.","Delegation and legal authority cited (subregulation 39.001(1)) concentrate decision power in the CASA delegate, so administrative discretion is present though not exercised to change substance.","Presence of cancelled and amended entries means stakeholders must reconcile legacy references against the re-made instruments."],"plain_english_summary":"This instrument, made by a CASA delegate under subregulation 39.001(1), revokes a list of Airworthiness Directives (ADs) that apply to General Electric CF6-series turbine engines and re-issues each AD as a separate instrument in the same form as the latest published edition. Owners, operators and maintenance organisations using CF6 engines must keep complying with the same AD requirements; the change is administrative and shifts where and how the ADs are officially recorded and referenced."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"The legislation maintains its original scope. This is purely an administrative remaking of existing Airworthiness Directives to ensure they operate under the correct regulatory framework. The note explicitly states each AD is remade 'in exactly the same form' — no expansion of scope, no new safety requirements, no additional engine types or operators brought within the net."},"complexity_factors":["Simple procedural mechanism: revoke and remake with no substantive changes","Single interpretation reference (subregulation 39.001(1) of CASR 1998)","No defined terms within the instrument itself — relies entirely on external AD documents","Straightforward tabular schedule listing 57 items with minimal descriptive text","No conditional logic, exceptions or nested provisions within the instrument text","Length is short (approximately 1 page of operative provisions plus schedule)","Cross-references are limited to the external AD numbers and CASR subregulation"],"plain_english_summary":"This instrument revokes and immediately remakes 57 Airworthiness Directives for General Electric CF6 engines to tidy their legal standing under the Civil Aviation Safety Regulations 1998. It does not change any safety requirements; it simply reissues the ADs so they remain legally enforceable. Affects operators, maintenance organisations and owners of CF6‑powered aircraft."}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-general-electric-turbine-engines-cf6-series","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-general-electric-turbine-engines-cf6-series/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-general-electric-turbine-engines-cf6-series/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-general-electric-turbine-engines-cf6-series/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-general-electric-turbine-engines-cf6-series/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-general-electric-turbine-engines-cf6-series/documents"}}