{"id":"F2006B08052","name":"Airworthiness Directives 2004 - Revocation and Remaking - Volkswagen Derivative Piston Engines","slug":"airworthiness-directives-2004-revocation-and-remaking-volkswagen-derivative-piston-engines","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115134,"registerId":"commonwealth-F2006B08052-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 - Volkswagen Derivative Piston Engines","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 Volkswagen Derivative Piston Engines\n\n AD Name AD Number\n\n Assurance Inspection AD/VW/1\n\n Cast Crankshafts AD/VW/2\n\n Rear Bearing AD/VW/3\n\n Propeller Adaptor Shaft AD/VW/4 Amdt 1\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The legislation explicitly states it is remaking the directives 'in exactly the same form' — this is purely administrative housekeeping with no expansion of scope."},"complexity_factors":["Very short instrument (under 300 words)","Only 4 specific directives referenced by simple alphanumeric codes","No defined terms section","No conditional logic or nested exceptions","Single operative provision with straightforward (a) and (b) structure","Cross-reference only to one regulation (subregulation 39.001(1)) and the attached schedules","Purpose is purely administrative remaking with no substantive changes"],"plain_english_summary":"This is a technical aviation safety instrument that **revokes and immediately remakes four specific airworthiness directives** for Volkswagen-based aircraft engines.\n\n**What it does:**\n- **Cancels** four existing safety rules (called \"Airworthiness Directives\") that apply to Volkswagen derivative piston engines used in aircraft\n- **Immediately replaces** them with identical new versions of the same rules\n\n**The four safety rules cover:**\n- **AD/VW/1** — Assurance Inspection: Regular checks to ensure engine safety\n- **AD/VW/2** — Cast Crankshafts: Safety requirements for cast crankshafts (the part that converts piston motion into rotation)\n- **AD/VW/3** — Rear Bearing: Requirements for the rear engine bearing (a component that supports rotating parts)\n- **AD/VW/4 Amdt 1** — Propeller Adaptor Shaft: Safety rules for the shaft connecting the engine to the propeller\n\n**Who it affects:**\n- Owners and operators of light aircraft using Volkswagen-derived engines (common in home-built and recreational aircraft)\n- Aircraft maintenance engineers who work on these engines\n- The Civil Aviation Safety Authority (CASA) itself\n\n**Why it matters:**\nAirworthiness Directives are legally binding safety orders. CASA sometimes needs to \"remake\" them for administrative reasons — such as reissuing them under updated regulation-making powers, fixing procedural issues, or ensuring they remain legally valid. The note confirms these are being remade in **exactly the same form** — so there's no change to the actual safety requirements. This is essentially housekeeping to keep the regulatory framework tidy and legally sound, without altering the safety standards that aircraft owners must follow."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"This instrument does not change the substantive scope or requirements of the listed Airworthiness Directives. It revokes the prior instruments and re-makes each AD in identical form (Note; Schedule 1), so the operative technical obligations remain the same. The change is procedural: re-issuance as separate, attached instruments under the delegate's power (subregulation 39.001(1))."},"complexity_factors":["Procedural legal action (revocation and re-making) rather than substantive amendment, limiting legal complexity but requiring accurate administrative tracking (opening paragraph; Schedule 1; Note).","Reference to an external statutory power (subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998) creates a cross-reference dependency that users must verify (opening paragraph).","Multiple separately re-made instruments are attached (four ADs listed in Schedule 1), increasing administrative coordination (Schedule 1).","One AD shows an amendment history marker (AD/VW/4 Amdt 1), implying version control considerations for operators and regulators (Schedule 1).","The instrument leaves substantive AD content unchanged but requires regulated parties to update citations and records, producing modest compliance-administration complexity (Note)."],"plain_english_summary":"This instrument revokes a set of Airworthiness Directives for Volkswagen‑derivative piston engines and re‑issues each as a separate, attached instrument in the same form. It affects aircraft owners, operators, maintenance organisations bound by those ADs and CASA as the issuing regulator.\n\nWhy it matters: it is procedural—no change to technical obligations or compliance costs, but regulated parties and regulators must update citations, records and references to the newly issued instruments."}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-volkswagen-derivative-piston-engines","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-volkswagen-derivative-piston-engines/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-volkswagen-derivative-piston-engines/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-volkswagen-derivative-piston-engines/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-volkswagen-derivative-piston-engines/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-volkswagen-derivative-piston-engines/documents"}}