{"id":"F2006B07969","name":"Airworthiness Directives 2004 - Revocation and Remaking - Pratt and Whitney Canada Turbine Engines - JT15D Series","slug":"airworthiness-directives-2004-revocation-and-remaking-pratt-and-whitney-canada-turbine-engines-jt15d","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115016,"registerId":"commonwealth-F2006B07969-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 - Pratt and Whitney Canada Turbine Engines - JT15D 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\nPratt and Whitney Canada Turbine Engines - JT15D Series\n\nAD Name AD Number\n\nRotor Components - Service Life - CANCELLED AD/JT15D/1 Amdt 9\n\nDeletion of Oil Filler Drain Tubes AD/JT15D/2\n\nOverspeed Actuating Rod-Increased Axial Clearance - CANCELLED AD/JT15D/3\n\nEngine Overspeed Fuel Shut-Off System AD/JT15D/4 Amdt 2\n\nModified Fuel Manifold Assembly AD/JT15D/5\n\nFan Blades AD/JT15D/6 Amdt 1\n\nFan Blade Rub AD/JT15D/7 Amdt 2\n\nHigh Turbine Blade Shift - CANCELLED AD/JT15D/8 Amdt 1\n\nBorescope Inspection of Impeller Rear Face AD/JT15D/9","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"Scope is not changed. The instrument expressly revokes the listed ADs and remakes each \"in exactly the same form as appears in the latest published edition of the Directive\" (note), so existing technical obligations and affected parties remain the same; entries marked CANCELLED in Schedule 1 remain cancelled and do not introduce new requirements."},"complexity_factors":["Purely administrative action: revocation and re-making of existing ADs without substantive change (Note: re-made in exactly the same form).","Multiple ADs listed across a schedule, including entries marked CANCELLED which may require cross-checking.","Delegated power citation (subregulation 39.001(1)) — legal formality rather than technical rulemaking.","Operational impact limited to continuing compliance by operators/maintenance organisations; no novel compliance regimes created.","Reliance on attached instruments (each AD attached as a separate instrument) increases document-management tasks for regulator and operators."],"plain_english_summary":"This instrument, issued by a CASA delegate under subregulation 39.001(1), revokes a list of Airworthiness Directives for Pratt & Whitney Canada JT15D engines and re-issues each one as a separate instrument in the same form as the latest published edition. It affects aircraft owners, operators and maintenance organisations who must continue to comply with the listed ADs; it preserves existing legal obligations and administrative clarity rather than introducing new technical requirements."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This instrument maintains identical scope to the original directives. The note explicitly states each directive is being re-made \"in exactly the same form\" as previously published. No expansion of regulatory scope occurs."},"complexity_factors":["Very short instrument (under 300 words)","Only 1 defined term implicitly used (subregulation 39.001(1) — a standard CASA delegation power)","Simple binary structure: revoke (a) and remake (b)","No conditional logic, exceptions, or cross-references beyond the Schedule","Schedule contains only a straightforward table mapping AD names to numbers","No substantive legal drafting — purely procedural/administrative"],"plain_english_summary":"This instrument revokes nine existing Pratt & Whitney Canada JT15D airworthiness directives and remakes them as new legal instruments without changing their technical requirements. It’s an administrative housekeeping action to preserve the existing, legally binding safety obligations for JT15D engines (used in business jets such as Cessna Citations).\n\nIt affects JT15D owners/operators, maintenance organisations, and CASA. Two listed directives (AD/JT15D/1 and AD/JT15D/3) were already marked “CANCELLED.”"}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-pratt-and-whitney-canada-turbine-engines-jt15d","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-pratt-and-whitney-canada-turbine-engines-jt15d/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-pratt-and-whitney-canada-turbine-engines-jt15d/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-pratt-and-whitney-canada-turbine-engines-jt15d/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-pratt-and-whitney-canada-turbine-engines-jt15d/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-pratt-and-whitney-canada-turbine-engines-jt15d/documents"}}