{"id":"F2006B07817","name":"Airworthiness Directives 2004 - Revocation and Remaking - Christen Industries A-1 (Husky) Series Aeroplanes","slug":"airworthiness-directives-2004-revocation-and-remaking-christen-industries-a-1-husky-series-aeroplane","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50698,"registerId":"commonwealth-F2006B07817-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"Airworthiness Directives 2004 - Revocation and Remaking - Christen Industries A-1 (Husky) Series Aeroplanes","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 Christen Industries A-1 (Husky) Series Aeroplanes\n\n AD Name AD Number\n\n Seat Back AD/HUSKY/1\n\n Carburettor Air Intake Box AD/HUSKY/2\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The instrument explicitly states it is remaking the directives 'in exactly the same form' as previously published. This is a pure administrative reissuance with no expansion of scope."},"complexity_factors":["Very short instrument (under 300 words)","Only 2 substantive items in Schedule 1","No defined terms section","Simple binary structure: (a) revoke, (b) remake","No cross-references to other legislation beyond the empowering regulation (subregulation 39.001(1))","No conditional logic or exceptions","Note explicitly states directives are remade 'in exactly the same form' — no substantive changes to analyse"],"plain_english_summary":"This is a technical aviation safety instrument that **revokes and immediately remakes two existing safety rules** for a specific type of light aircraft called the Christen Industries A-1 (Husky) series.\n\n**What it does:**\n- **Cancels** two existing Airworthiness Directives (AD/HUSKY/1 and AD/HUSKY/2)\n- **Reissues them unchanged** as fresh legal instruments\n\n**The two safety rules cover:**\n- **AD/HUSKY/1** — Seat Back: Likely addresses structural or safety issues with the pilot/passenger seat backs\n- **AD/HUSKY/2** — Carburettor Air Intake Box: Addresses the engine air intake system that mixes fuel and air\n\n**Who it affects:**\n- Owners and operators of Christen Husky A-1 series aeroplanes (a popular bush plane used in Australia)\n- Aircraft maintenance engineers who work on these planes\n- The Civil Aviation Safety Authority (CASA) itself\n\n**Why it matters:**\nAirworthiness Directives are **legally binding safety orders**. Aircraft cannot fly legally if they don't comply. This \"revoke and remake\" process is a housekeeping exercise — it refreshes the legal authority of these safety rules without changing their actual content. This ensures the directives remain valid and enforceable under current regulations, even if the original legal instrument had technical or procedural issues."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The instrument does not change the substantive scope of obligations. It expressly revokes the listed ADs and re-makes them “in exactly the same form as appears in the latest published edition of the Directive” (Note), and the Schedule identifies the two ADs concerned (Seat Back AD/HUSKY/1 and Carburettor Air Intake Box AD/HUSKY/2). Therefore the legal scope of obligations on affected aircraft/operators remains as set out in those latest published ADs."},"complexity_factors":["Procedural nature: instrument only revokes and re-makes existing ADs without changing substance (Note).","Short text with limited operative provisions (single paragraph of action plus Schedule 1).","Reference to enabling subregulation (39.001(1)) and named delegate — legal authority is explicit but narrow.","Reliance on attached ADs for technical detail (Schedule 1 lists AD identifiers; attachments carry operative requirements).","No novel regulatory mechanisms, conditions, or phased implementation rules in the instrument itself."],"plain_english_summary":"A CASA delegate revokes and re-issues two Airworthiness Directives (Seat Back and Carburettor Air Intake Box) for Christen A‑1 (Husky) aeroplanes, re-making them in the identical form of the latest published editions. Affected owners, operators and maintenance personnel must continue to comply with the existing AD requirements; the instrument is procedural and imposes no new substantive obligations or costs."}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-christen-industries-a-1-husky-series-aeroplane","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-christen-industries-a-1-husky-series-aeroplane/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-christen-industries-a-1-husky-series-aeroplane/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-christen-industries-a-1-husky-series-aeroplane/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-christen-industries-a-1-husky-series-aeroplane/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-christen-industries-a-1-husky-series-aeroplane/documents"}}