{"id":"F2006B07782","name":"Airworthiness Directives 2004 - Revocation and Remaking - C.A.C. CA-18 (Mustang) Series Aeroplanes","slug":"airworthiness-directives-2004-revocation-and-remaking-c-a-c-ca-18-mustang-series-aeroplanes","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50585,"registerId":"commonwealth-F2006B07782-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 - C.A.C. CA-18 (Mustang) 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 C.A.C. CA-18 (Mustang) Series Aeroplanes\n\n AD Name AD Number\n\n Wing Front Spar AD/MUSTANG/1 Amdt 2\n\n Main Landing Gear Pivot Shaft - Inspection AD/MUSTANG/2 Amdt 1\n\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The instrument does not change the substantive scope or requirements of the listed Airworthiness Directives. It revokes the ADs in Schedule 1 and re‑makes them as separate instruments in identical form to the latest published editions (see operative paragraphs and the Note). Therefore the practical scope of the ADs remains unchanged."},"complexity_factors":["Short, single-purpose instrument that revokes and re‑issues named ADs","Clear statutory authorisation cited (subregulation 39.001(1))","No substantive amendments to AD text (Note: re‑made in exactly the same form)","Technical detail of the ADs themselves is external to this instrument (attached but not reproduced here), so legal interpretation of technical obligations requires consulting the attached ADs","Administrative formalities (signature, date, schedule) rather than complex legislative drafting or layered amendments"],"plain_english_summary":"This instrument, signed by a CASA delegate under subregulation 39.001(1), administratively revokes and re‑issues two Airworthiness Directives for C.A.C. CA‑18 (Mustang) series aeroplanes, re‑making them in exactly the same form as the latest published editions. Owners, operators and maintenance organisations remain subject to the same compliance obligations; no substantive changes or new requirements are introduced."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This instrument maintains identical scope to the original directives. The revocation and remaking is purely administrative to ensure proper legislative form under the Civil Aviation Safety Regulations 1998, with an explicit note confirming no changes to content."},"complexity_factors":["Very short instrument (under 300 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: (a) revoke, (b) remake","Administrative remaking with no substantive changes to technical content"],"plain_english_summary":"This is a technical aviation safety instrument that **revokes and immediately remakes two specific airworthiness directives** for a particular type of vintage military aircraft—the C.A.C. CA-18 Mustang series (Australian-built versions of the famous P-51 Mustang fighter plane from World War II).\n\n**What it does:**\n- **Revokes** two existing safety rules (Airworthiness Directives) that were already in place for these aircraft\n- **Remakes** those exact same rules as fresh, standalone legal instruments\n\n**The two safety rules cover:**\n- **Wing Front Spar** (AD/MUSTANG/1 Amdt 2): Inspections and maintenance of the main structural beam that runs through the wing\n- **Main Landing Gear Pivot Shaft** (AD/MUSTANG/2 Amdt 1): Inspections of the shaft that the main wheels rotate on when retracting/extending\n\n**Who it affects:**\n- Owners and operators of C.A.C. CA-18 Mustang aircraft (a small number of heritage/warbird operators in Australia)\n- Maintenance organisations working on these aircraft\n\n**Why it matters:**\nAirworthiness Directives are **legally binding safety orders** issued when a potential unsafe condition is found in an aircraft type. These particular directives address critical structural components—failures could lead to wing separation or landing gear collapse. The revocation and remaking is an administrative \"housekeeping\" exercise to ensure the directives exist as properly authorised standalone instruments under current regulations, rather than inherited rules from older systems. The safety requirements themselves don't change—the Note explicitly states each directive is \"re-made in exactly the same form.\""}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-c-a-c-ca-18-mustang-series-aeroplanes","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-c-a-c-ca-18-mustang-series-aeroplanes/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-c-a-c-ca-18-mustang-series-aeroplanes/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-c-a-c-ca-18-mustang-series-aeroplanes/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-c-a-c-ca-18-mustang-series-aeroplanes/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-c-a-c-ca-18-mustang-series-aeroplanes/documents"}}