{"id":"F2006B07975","name":"Airworthiness Directives 2004 - Revocation and Remaking - Pratt and Whitney Piston Engines","slug":"airworthiness-directives-2004-revocation-and-remaking-pratt-and-whitney-piston-engines","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115023,"registerId":"commonwealth-F2006B07975-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 Piston Engines","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 Piston Engines\n\nAD Name AD Number\n\nLink Pin Plug Staking - Modification - CANCELLED AD/PW-P/1\n\nCANCELLED AD/PW-P/2\n\nCrankshaft Threads - Modification - CANCELLED AD/PW-P/3\n\nExhaust Valve Pushrods - Replacement - CANCELLED AD/PW-P/4\n\nCrankshaft Bearings - Replacement - CANCELLED AD/PW-P/5\n\nMaster Rod Bolt - Inspection - CANCELLED AD/PW-P/6\n\nOperating Restrictions - Placarding AD/PW-P/7\n\nOperating Restrictions - Placarding AD/PW-P/8\n\nCANCELLED AD/PW-P/9\n\nCANCELLED AD/PW-P/10\n\nSuperseded by AD/PW-P/14 AD/PW-P/11\n\nOperating Restrictions - Placarding AD/PW-P/12\n\nPiston Pin - Replacement AD/PW-P/13\n\nCam Reduction Gear Assembly - Replacement AD/PW-P/14\n\nCrankshaft Flyweight and Flyweight Liners - Inspection and Modification AD/PW-P/15\n\nMaster Rod - Retirement Life AD/PW-P/16 Amdt 1\n\nPropeller Oil Feed Pipe - Modification AD/PW-P/17\n\nR1340 PMA Crankshaft AD/PW-P/18 Amdt 1\n\nCylinder Head Inspection AD/PW-P/19","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This instrument performs exactly the function described in its title — revoking and remaking airworthiness directives. There is no scope creep; it is purely an administrative restructuring of existing safety requirements without expanding or altering their substance."},"complexity_factors":["Short, single-purpose instrument (2 pages)","Minimal conditional logic — straightforward revocation and remaking","Only 1 defined term implicitly used (the Schedule)","No cross-references to other legislation beyond the enabling regulation (subregulation 39.001(1))","Tabular format in Schedule 1 makes content easy to scan","Simple administrative action with no substantive legal changes"],"plain_english_summary":"This instrument revokes 19 existing Pratt & Whitney piston-engine airworthiness directives and reissues them as separate, standalone legal instruments in the same form. It’s an administrative restructuring only — the safety requirements, inspections and maintenance obligations remain unchanged. It affects aircraft owners/operators, licensed maintenance engineers, and businesses that maintain or overhaul these engines."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The instrument does not change substantive regulatory requirements. It revokes the listed Airworthiness Directives and reissues each in the same form (per the note), so compliance obligations persist. The Schedule records some items as 'CANCELLED' or 'Superseded', reflecting their existing status rather than a new expansion of scope."},"complexity_factors":["Legal basis is a single delegated power: subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998 (simple source of authority).","Administrative action only: revocation and re-making of instruments rather than substantive amendment (reduces legal complexity).","Schedule 1 lists multiple ADs with mixed statuses (some marked 'CANCELLED' or 'Superseded'), creating modest interpretation work for implementers.","Note states each re-made AD is reproduced 'in exactly the same form' as the latest published edition — limits substantive change but requires cross-checking with published editions.","Decision executed by a CASA delegate (David Alan Villiers) rather than primary legislation — introduces standard delegated-administration considerations.","Obligations and compliance burden remain on operators and maintenance organisations; administrative renumbering/republishing may create record‑keeping or procedural costs for regulated parties."],"plain_english_summary":"Acts under subregulation 39.001(1) to revoke the Pratt & Whitney piston‑engine Airworthiness Directives listed in Schedule 1 and to reissue each as a separate, attached instrument. The instrument notes each re-made Directive is identical to the latest published edition.\n\nThis affects aircraft operators, owners and maintenance organisations using the listed engines: existing compliance duties are preserved while the administrative form and instrument numbering are changed. Compliance costs fall on those required to meet the Directives; the decision is taken by a CASA delegate."},"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"}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-pratt-and-whitney-piston-engines","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-pratt-and-whitney-piston-engines/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-pratt-and-whitney-piston-engines/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-pratt-and-whitney-piston-engines/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-pratt-and-whitney-piston-engines/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-pratt-and-whitney-piston-engines/documents"}}