{"id":"F2006B07781","name":"Airworthiness Directives 2004 - Revocation and Remaking - Bushby Mustang II Series Aeroplanes","slug":"airworthiness-directives-2004-revocation-and-remaking-bushby-mustang-ii-series-aeroplanes","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50580,"registerId":"commonwealth-F2006B07781-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 - Bushby Mustang II 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 Bushby Mustang II Series Aeroplanes\n\n AD Name AD Number\n\n Canopy Frame - Modification AD/BUSHBY M2/1\n\n Sta 114.75 Bulkhead Member P/N 240.339 AD/BUSHBY M2/2 Amdt 1\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a purely administrative instrument that maintains the existing scope. The note explicitly states each directive is being remade \"in exactly the same form\" as the previous version. There is no expansion of regulatory scope or change to the underlying safety requirements."},"complexity_factors":["Very short instrument (approximately 200 words)","Only 2 substantive items in Schedule 1","No defined terms section","No cross-references to other legislation beyond the enabling regulation (subregulation 39.001(1))","Simple binary structure: revoke (a) and remake (b)","Straightforward administrative remaking without policy changes"],"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) two existing Airworthiness Directives for Bushby Mustang II series aeroplanes\n- **Remakes** those same directives as new, separate legal instruments\n\n**Who it affects:**\n- Owners and operators of Bushby Mustang II series aircraft (a type of homebuilt/experimental aeroplane)\n- Aircraft maintenance engineers who work on these planes\n\n**Why it matters:**\nAirworthiness Directives are mandatory safety notices that require specific inspections, modifications, or repairs to aircraft. This instrument is essentially a housekeeping exercise — CASA is updating the legal form of these safety requirements without changing their actual content. The note at the bottom confirms the directives are being remade \"in exactly the same form\" as before.\n\n**The specific safety issues covered:**\n- **AD/BUSHBY M2/1**: Requires modification of the canopy frame\n- **AD/BUSHBY M2/2 Amdt 1**: Addresses a specific bulkhead member (part number 240.339) at station 114.75 (a measurement point on the aircraft fuselage)\n\nThis ensures these safety requirements remain legally enforceable under current regulations."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The instrument does not change the substantive scope of regulatory obligations for the listed Bushby Mustang II ADs. It revokes the listed ADs and reissues them as separate instruments \"in exactly the same form as appears in the latest published edition of the Directive\" (Note; Schedule 1). Therefore, based on the instrument's own statements, the legal obligations and affected parties remain the same; the change is administrative (revocation and separate remaking) rather than substantive."},"complexity_factors":["Narrow administrative scope: limited to revoking and reissuing specified ADs (Schedule 1).","Few operative provisions: primary actions are revocation and remaking; no new substantive regulatory requirements are introduced (opening paragraph; Note).","Clear legal authority: action taken under a single cited subregulation (subregulation 39.001(1)).","Dependence on attached documents: substantive content and compliance obligations are contained in the attached ADs (Schedule 1; Note), requiring cross-reference to assess operational impact.","Procedural precision: reproducing the \"latest published edition\" exactly imposes a requirement to ensure textual fidelity and correct publication (Note)."],"plain_english_summary":"This instrument, signed by CASA delegate David Alan Villiers, formally revokes two Airworthiness Directives for Bushby Mustang II aeroplanes and reissues them as separate instruments in the same form as their latest published editions. It thus preserves existing mandatory maintenance/modification obligations for owners, operators and maintainers, while mainly producing an administrative change (new legal identifiers and record‑keeping) rather than substantive regulatory or safety changes."}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-bushby-mustang-ii-series-aeroplanes","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-bushby-mustang-ii-series-aeroplanes/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-bushby-mustang-ii-series-aeroplanes/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-bushby-mustang-ii-series-aeroplanes/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-bushby-mustang-ii-series-aeroplanes/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-bushby-mustang-ii-series-aeroplanes/documents"}}