{"id":"F2006B08057","name":"Airworthiness Directives 2004 - Revocation and Remaking - Williams-Rolls Turbine Engines - FJ44 Series","slug":"airworthiness-directives-2004-revocation-and-remaking-williams-rolls-turbine-engines-fj44-series","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115143,"registerId":"commonwealth-F2006B08057-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 - Williams-Rolls Turbine Engines - FJ44 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 Williams-Rolls Turbine Engines - FJ44 Series\n\n AD Name AD Number\n\n High Pressure Turbine Disc AD/FJ44/1\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a procedural remaking instrument with no expansion of scope. The note explicitly states each directive is being remade \"in exactly the same form\" as the existing published version. The scope remains limited to the specific Williams-Rolls FJ44 engine series and the specific High Pressure Turbine Disc issue addressed in AD/FJ44/1."},"complexity_factors":["Very short instrument (under 300 words)","Only one defined term implicitly referenced (the specific AD number)","No nested conditional logic or exceptions","Single cross-reference to Civil Aviation Safety Regulations 1998 (subregulation 39.001(1)) — the enabling power","Straightforward two-step structure: revoke old, make new","No substantive technical content included in the instrument itself (the actual requirements are in the attached/scheduled directive)"],"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:\n\n**What it does:**\n- **Revokes** (cancels) an existing Airworthiness Directive — specifically **AD/FJ44/1** concerning High Pressure Turbine Discs on Williams-Rolls FJ44 series turbine engines\n- **Remakes** that same directive as a new, separate legal instrument\n\n**Who it affects:**\n- Owners and operators of aircraft powered by Williams-Rolls FJ44 series turbine engines\n- Maintenance organisations working on these engines\n- Anyone responsible for ensuring these engines remain airworthy (safe to fly)\n\n**Why it matters:**\nAirworthiness Directives are legally binding safety orders. They typically require specific inspections, repairs, or modifications when a safety issue is discovered with an aircraft or engine. This instrument is part of CASA's housekeeping process — updating the legal form of existing safety requirements without changing their actual content. The note confirms the directive is being remade \"in exactly the same form\" as before, so no new technical requirements are being imposed.\n\n**In simple terms:** Think of this like reprinting a safety manual with a new cover and updated page numbers, but the actual safety instructions inside stay exactly the same."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The instrument expressly re-makes the listed AD(s) \"in exactly the same form as appears in the latest published edition of the Directive\" (Note). Therefore there is no substantive change to the scope or requirements of the AD(s); the change is administrative (revocation and re-issuance) rather than substantive."},"complexity_factors":["Limited substantive content — instrument performs an administrative revocation and re-issuance","Single named AD in Schedule 1 (AD/FJ44/1) reduces scope and technical complexity","Clear delegated authority reference (subregulation 39.001(1)) simplifies legal basis","Potential operational complexity limited to record-keeping and citation changes for operators and CASA","No new technical compliance requirements or amended regulatory standards in the text provided"],"plain_english_summary":"This instrument administratively revokes and re‑issues the Airworthiness Directive for Williams‑Rolls FJ44 high‑pressure turbine discs, remaking it as a separate, standalone instrument in exactly the same form as the latest published Directive. It affects owners, operators and maintenance organisations using those engines; there is no change to technical obligations, only an administrative need to update records, citations and compliance references."}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-williams-rolls-turbine-engines-fj44-series","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-williams-rolls-turbine-engines-fj44-series/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-williams-rolls-turbine-engines-fj44-series/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-williams-rolls-turbine-engines-fj44-series/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-williams-rolls-turbine-engines-fj44-series/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-williams-rolls-turbine-engines-fj44-series/documents"}}