{"id":"F2006B08004","name":"Airworthiness Directives 2004 - Revocation and Remaking - Rolls Royce (Allison) Turbine Engines - AE 2100 Series","slug":"airworthiness-directives-2004-revocation-and-remaking-rolls-royce-allison-turbine-engines-ae-2100-se","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115062,"registerId":"commonwealth-F2006B08004-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 (Allison) Turbine Engines - AE 2100 Series","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 20.2\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\n Airworthiness Directives 2004\n\n I, DAVID ALAN VILLIERS, delegate of the Civil Aviation Safety\n\n Authority, acting under subregulation 39.001 (1) of the Civil\n\n Aviation Safety Regulations 1998:\n\n (a) revoke the Airworthiness Directives mentioned in\n\n Schedule 1; and\n\n (b) make, as separate instruments, each Airworthiness\n\n Directive mentioned in Schedule 1 and attached.\n\n \n\n ![](image.001.png)\n\n David Villiers\n\n Delegate of the Civil Aviation Safety Authority\n\n \n\n  20 December 2004\n\n Note:   Each attached Airworthiness Directive is being re-made in exactly the\n\n same form as appears in the latest published edition of the Directive.\n\n \n\n\n Schedule 1 Revocation and Remaking of\n\n Airworthiness Directives\n\n Rolls Royce (Allison) Turbine Engines - AE 2100 Series\n\n AD Name AD Number\n\n High Pressure Turbine Wheel AD/AE 2100/1\n\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The instrument does not change the substantive scope or requirements of the Airworthiness Directive listed in Schedule 1. It revokes the named Directive and re-makes it in exactly the same form as the latest published edition, preserving existing obligations and legal effect (Schedule 1; AD/AE 2100/1)."},"complexity_factors":["Instrument is administrative (revocation and reissuance) rather than substantive technical regulation.","Clear legal reference to a single statutory power (subregulation 39.001(1)) reduces interpretive uncertainty.","Limited number of affected instruments (one named AD in Schedule 1) narrows scope.","Potential technical complexity resides in the underlying AD content (not reproduced here), which may require specialist knowledge for operational compliance.","Low procedural complexity but requires accurate clerical/publishing implementation to avoid errors when reissuing identical instruments."],"plain_english_summary":"This instrument revokes a listed Airworthiness Directive for Rolls Royce (Allison) AE 2100 engines (High Pressure Turbine Wheel) and re‑issues it as a separate legal instrument in the identical form published previously. \n\nIt affects aircraft owners/operators, maintenance organisations and CASA’s delegate. There is no change to technical obligations or safety requirements — it is a legal housekeeping step to preserve continuity while shifting the Directive into a standalone instrument, with only administrative update costs for affected parties."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a pure administrative remaking exercise. The note explicitly confirms the directive is being re-made 'in exactly the same form' as the existing published edition. There is no expansion of scope, no new safety requirements, and no change to the affected parties or technical standards."},"complexity_factors":["Very short instrument (approximately 200 words)","Only 1 defined term implicitly referenced (the AD number AD/AE 2100/1)","No nested conditional logic or exceptions","Single cross-reference to subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998","Straightforward two-step structure: (a) revoke, (b) remake","No substantive technical content included in the instrument itself (the actual requirements are in the attached/scheduled directive, not reproduced here)"],"plain_english_summary":"This is a technical aviation safety instrument issued by the Civil Aviation Safety Authority (CASA) in December 2004. It does two things: **revokes** (cancels) an existing airworthiness directive, and then **remakes** it as a fresh legal instrument.\n\n**What is an Airworthiness Directive?**\nAn Airworthiness Directive (AD) is a mandatory safety notice issued by aviation regulators. When a safety problem is discovered in an aircraft, engine, or component, the regulator issues an AD requiring owners or operators to inspect, repair, or replace the affected part. Compliance is legally compulsory.\n\n**What this specific instrument does:**\n- **Target:** Rolls Royce (Allison) AE 2100 series turbine engines (these are turboprop engines used on aircraft like the Saab 2000 and Lockheed C-130J)\n- **Specific issue:** The High Pressure Turbine Wheel (a critical rotating component in the engine's hot section)\n- **Action:** The existing directive AD/AE 2100/1 is being cancelled and immediately reissued in identical form\n\n**Why remake an identical directive?**\nThis is likely an administrative \"housekeeping\" exercise. Australian aviation law was restructured in 1998 with the introduction of the Civil Aviation Safety Regulations. Older directives originally made under previous legislation needed to be formally remade under the new regulatory framework (specifically subregulation 39.001(1)) to ensure they remained legally valid and enforceable. The note explicitly states the content is unchanged—only the legal basis is being updated.\n\n**Who does this affect?**\n- Aircraft operators using AE 2100 engines\n- Maintenance organisations servicing these engines\n- Owners of aircraft with these engines installed\n\n**Why it matters:**\nEven though the technical requirements haven't changed, this ensures the safety requirement remains legally binding under current law. Without this remaking process, the old directive might have become legally unenforceable, potentially creating a safety gap."}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-rolls-royce-allison-turbine-engines-ae-2100-se","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-rolls-royce-allison-turbine-engines-ae-2100-se/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-rolls-royce-allison-turbine-engines-ae-2100-se/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-rolls-royce-allison-turbine-engines-ae-2100-se/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-rolls-royce-allison-turbine-engines-ae-2100-se/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-rolls-royce-allison-turbine-engines-ae-2100-se/documents"}}