{"id":"F2006B08009","name":"Airworthiness Directives 2004 - Revocation and Remaking - Rolls Royce Turbine Engines - RB211 Series","slug":"airworthiness-directives-2004-revocation-and-remaking-rolls-royce-turbine-engines-rb211-series","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115070,"registerId":"commonwealth-F2006B08009-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 - Rolls Royce Turbine Engines - RB211 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\nRolls Royce Turbine Engines - RB211 Series\n\nAD Name AD Number\n\nA.V.M. Indication and Oil Pressure Indication and M.E.L.Requirements, AD/RB211/1 Amdt 4\n\nH.P. Compressor Stage 1 and 2 Disc - Removal AD/RB211/2\n\nSpeed and Temperature Governing System AD/RB211/3 Amdt 2\n\nGroup A Parts AD/RB211/4 Amdt 6\n\nLow Pressure Compressor Rotor (Fan) Axial Retention AD/RB211/5 Amdt 2\n\nLow Pressure Compressor Rotor (Fan) Axial Retention AD/RB211/6 Amdt 4\n\nLow Pressure Compressor Rotor (Fan) Shafts Inspection AD/RB211/7\n\nH.P. Compressor Rotor Stage 4 to 6 Shaft Assembly - Life Limitation AD/RB211/8\n\nFan Cowl Support Strut Stowage AD/RB211/9\n\nHigh Pressure Compressor Disc AD/RB211/10 Amdt 1\n\nFuel Metering Valve Torque Motor Test AD/RB211/11\n\nN3 Governor with Approved Wear Resistance AD/RB211/12\n\nThrust Reverser Functional Test AD/RB211/13\n\nThrust Reverser Resolver AD/RB211/14 Amdt 1\n\nIP Compressor Stage 6-7 Rotor Shaft Life AD/RB211/15\n\nFuel Metering Unit - On Wing Test AD/RB211/16 Amdt 1\n\nIntermediate Pressure Compressor Stage 6-7 Rotor Shafts AD/RB211/17\n\nLow Pressure Fuel Tube Assembly AD/RB211/18 Amdt 1\n\nCombustion Liner AD/RB211/19 Amdt 6\n\nFuel Flow Governor AD/RB211/20\n\nRadial Drive Steady Bearing AD/RB211/21 Amdt 2\n\nSpray Nozzle Fuel Supply Tube - Inspection AD/RB211/22 Amdt 1\n\nHP Compressor Rotor Shaft to HP Turbine Rotor Disc Retaining Bolts AD/RB211/23\n\nHP Turbine Disc - Inspection AD/RB211/24 Amdt 1\n\nCold Stream Nozzle AD/RB211/25\n\nLP Compressor Fan Blades AD/RB211/26 Amdt 1\n\nLP Compressor Fan Blades AD/RB211/27 Amdt 2\n\nEngine Mounts AD/RB211/28 Amdt 1\n\nLP Compressor Blades AD/RB211/29 Amdt 1\n\nThrust Reverser Inspection AD/RB211/30\n\nEngine Mount Bush - Replacement AD/RB211/31\n\nStage 5 Compressor Disc - Inspection AD/RB211/32 Amdt 1\n\nHigh Speed Gearbox and Dedicated Generator - Modifications AD/RB211/33","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":6,"scope_assessment":{"changed":false,"description":"No substantive scope change. The instrument revokes the listed ADs and re‑issues each \"in exactly the same form as appears in the latest published edition of the Directive\" (site note), so requirements remain materially unchanged; the action is administrative, shifting how instruments are published and tracked rather than altering compliance obligations."},"complexity_factors":["Large number of distinct Airworthiness Directives listed (33 items) increases administrative and record‑keeping burden.","Technical specificity to Rolls Royce RB211 engine components requires specialist maintenance and interpretation.","Many entries include amendment numbers (Amdt), creating version control and historical-tracking complexity.","The instrument performs a procedural revocation-and-remaking (administrative action) rather than substantive amendment, which can still cause transitional confusion.","Decision-making is exercised by a CASA delegate under subregulation 39.001(1), concentrating implementation authority in delegated administrative action.","Operators and maintenance organisations bear ongoing compliance costs and must monitor multiple separate instruments rather than a single consolidated document.","Potential interdependencies or cross-references between individual ADs increase legal interpretation risk when enforced separately."],"plain_english_summary":"**This instrument directs CASA’s delegate (under subregulation 39.001(1)) to revoke a listed set of RB211-series airworthiness directives and re-issue each as a separate, identical instrument.**\n\nAircraft operators, maintenance organisations and owners of RB211‑engined aircraft must continue to comply with those directives and will bear any compliance and administrative costs from tracking the re‑made instruments."},"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":3,"scope_assessment":{"changed":false,"description":"The scope remains identical to the original 2004 compilation. This instrument explicitly states it is remaking the directives 'in exactly the same form' as previously published. No expansion of regulatory reach or addition of new substantive requirements."},"complexity_factors":["Single, clear administrative action with only two operative paragraphs (revocation and remaking)","No defined terms section — relies on external understanding of 'Airworthiness Directive' and 'Schedule'","No conditional logic or nested exceptions in the instrument itself","Simple tabular schedule listing 33 items with two columns (name and number)","Cross-references limited to subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998 and Schedule 1","Note clarifies that technical content remains unchanged, reducing interpretive burden","However, the actual technical content of the 33 attached directives (not reproduced here) would contain significant engineering complexity"],"plain_english_summary":"This instrument revokes and reissues 33 existing Airworthiness Directives for Rolls‑Royce RB211 engines, converting them from a 2004 bundled compilation into separate, standalone legal instruments. It affects aircraft operators, maintenance organisations and flight crews using RB211‑powered Boeing and Lockheed types.\n\nThis is administrative housekeeping only: the safety requirements remain unchanged—no technical or compliance changes are introduced."}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-rolls-royce-turbine-engines-rb211-series","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-rolls-royce-turbine-engines-rb211-series/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-rolls-royce-turbine-engines-rb211-series/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-rolls-royce-turbine-engines-rb211-series/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-rolls-royce-turbine-engines-rb211-series/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-rolls-royce-turbine-engines-rb211-series/documents"}}