{"id":"F2006B07832","name":"Airworthiness Directives 2004 - Revocation and Remaking - DH 89 (Dragon Rapide) Series Aeroplanes","slug":"airworthiness-directives-2004-revocation-and-remaking-dh-89-dragon-rapide-series-aeroplanes","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50746,"registerId":"commonwealth-F2006B07832-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 - DH 89 (Dragon Rapide) 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 DH 89 (Dragon Rapide) Series Aeroplanes\n\n AD Name AD Number\n\n Fuel System Control - Modification AD/DH 89/1\n\n Aileron Differential Pulley - Inspection AD/DH 89/2\n\n Interplane Strut - Inspection AD/DH 89/3\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This instrument maintains the exact same scope as the original Airworthiness Directives. The note explicitly states each directive is being 're-made in exactly the same form as appears in the latest published edition.' This is purely administrative housekeeping to ensure legal continuity under the Civil Aviation Safety Regulations 1998, not an expansion of regulatory scope."},"complexity_factors":["Very short instrument — approximately 200 words","Only 3 defined items (the three Airworthiness Directives listed in Schedule 1)","Simple binary structure: revoke old instruments, make new ones","No nested conditional logic or cross-references to other legislation beyond the enabling regulation (subregulation 39.001(1))","Straightforward administrative remaking with no substantive changes to technical content","Single operative clause with two sub-paragraphs (a) and (b)"],"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) three existing Airworthiness Directives for DH 89 Dragon Rapide aircraft — these are vintage British twin-engine biplanes from the 1930s-40s\n- **Remakes** those same three directives as separate, standalone legal instruments\n\n**The three safety rules being updated:**\n- **AD/DH 89/1** — Requires modification of the fuel system controls\n- **AD/DH 89/2** — Requires inspection of the aileron differential pulley (the ailerons are the hinged flaps on the wings that control roll; the differential pulley system ensures they move correctly)\n- **AD/DH 89/3** — Requires inspection of the interplane struts (the structural supports between the upper and lower wings of this biplane)\n\n**Who it affects:**\n- Owners and operators of DH 89 Dragon Rapide aircraft in Australia (mostly heritage aviation operators, museums, and private collectors)\n- Maintenance organisations servicing these aircraft\n\n**Why it matters:**\nAirworthiness Directives are legally binding safety orders. They exist because something about the aircraft design or history has been found to be unsafe. These particular directives address fuel system risks, flight control reliability, and structural integrity — all critical to keeping these 80+ year old aircraft flying safely. The remaking process ensures these safety requirements remain legally current and enforceable under the Civil Aviation Safety Regulations 1998."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The instrument does not change the substantive scope or content of the listed airworthiness directives. It revokes the previous instruments and reissues each AD \"in exactly the same form as\" the latest published edition (note). The practical scope of obligations on operators and maintainers therefore remains unchanged; the change is to legal form and document citation only (opening paragraph; Schedule 1; note)."},"complexity_factors":["Short, single-purpose instrument limited to revocation and re-issue of named ADs","No substantive change to technical requirements (ADs re-made in identical form)","Clear legal authority cited (subregulation 39.001(1))","Effect limited to three named ADs for a single aircraft type (DH 89 series)","Administrative change may require cross-referencing and record updates by operators"],"plain_english_summary":"A CASA delegate has revoked and re‑issued three airworthiness directives for DH 89 (Dragon Rapide) series aeroplanes as separate legal instruments; the re‑made ADs are identical in substance to the latest published versions.  \n\nThis is an administrative re‑formatting that affects owners, operators and maintenance organisations (record‑keeping and citation), but does not change technical obligations or compliance requirements."}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-dh-89-dragon-rapide-series-aeroplanes","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-dh-89-dragon-rapide-series-aeroplanes/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-dh-89-dragon-rapide-series-aeroplanes/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-dh-89-dragon-rapide-series-aeroplanes/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-dh-89-dragon-rapide-series-aeroplanes/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-dh-89-dragon-rapide-series-aeroplanes/documents"}}