{"id":"F2006B07771","name":"Airworthiness Directives 2004 - Revocation and Remaking - Boeing 75 Series Aeroplanes","slug":"airworthiness-directives-2004-revocation-and-remaking-boeing-75-series-aeroplanes","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50548,"registerId":"commonwealth-F2006B07771-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 - Boeing 75 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 Boeing 75 Series Aeroplanes\n\n AD Name AD Number\n\n Wing Spars AD/B75/1 Amdt 2\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This instrument maintains identical scope to the original airworthiness directive. The note explicitly states each AD is being re-made in exactly the same form as the latest published edition. This is purely administrative reclassification under the new CASR Part 39 framework, not an expansion of regulatory scope."},"complexity_factors":["Very short instrument (under 300 words)","Only one substantive action (revocation and remaking of a single AD)","No defined terms section — relies on external knowledge of aviation terminology","No conditional logic or nested exceptions","Single cross-reference to Civil Aviation Safety Regulations 1998 (subregulation 39.001(1))","Structure is straightforward: delegation statement, two actions (revoke and make), signature, schedule"],"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) an existing airworthiness directive for Boeing 75 series aeroplanes\n- **Remakes** that same directive as a fresh, standalone legal instrument\n\n**Who it affects:**\n- Owners and operators of Boeing 75 series aircraft (these are older military trainer aircraft, often called \"Kaydet\" or \"Stearman\" biplanes, originally built in the 1930s-40s)\n- Maintenance organisations working on these aircraft\n\n**Why it matters:**\nAirworthiness Directives (ADs) are legally binding safety instructions. They tell aircraft owners they must inspect or fix specific problems to keep flying legally. This particular AD concerns **wing spars** — the main structural beams that hold the wings to the fuselage. If these fail, the wing can detach in flight.\n\n**The technical detail:**\nThe instrument is essentially administrative housekeeping. CASA is cancelling the old version of the wing spar safety rule (AD/B75/1 Amendment 2) and reissuing it in identical form as a separate instrument. This was part of a broader 2004 project to reorganise how ADs were structured under new aviation regulations.\n\n**Key takeaway:** If you own a Boeing 75 series aircraft, you still need to comply with the wing spar inspection requirements — nothing about the actual safety requirement has changed, only the legal paperwork surrounding it."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The instrument does not change substantive scope or obligations. It revokes and re-makes the listed Airworthiness Directive in exactly the same form as the latest published edition (Note). The practical obligations on affected operators therefore remain the same; the change is to the legal form/placement of the Directive (see operative paragraphs (a) and (b) and Schedule 1)."},"complexity_factors":["Instrument is short and procedural (revocation and re-making only).","References an external regulation for decision-making authority: subregulation 39.001(1).","Relies on attached/re-made Airworthiness Directive text (not reproduced here) for substantive obligations.","Administrative effect (change of legal form) may affect citation/registration practices, creating minor procedural complexity."],"plain_english_summary":"This instrument, dated 20 Dec 2004 and made by the CASA delegate, administratively revokes the listed Airworthiness Directive for Boeing 75 Series aeroplanes and re‑issues it as a separate legal instrument in identical form. It affects owners/operators subject to AD/B75/1 Amdt 2 but does not change substantive obligations, costs or regulatory effects — the change is procedural, altering how the Directive is recorded and cited."}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-boeing-75-series-aeroplanes","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-boeing-75-series-aeroplanes/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-boeing-75-series-aeroplanes/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-boeing-75-series-aeroplanes/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-boeing-75-series-aeroplanes/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-boeing-75-series-aeroplanes/documents"}}