{"id":"F2008L00602","name":"AD/AC/45 - Nose Wheel Tyre - Inspection and Replacement - CANCELLED","slug":"ad-ac-45-nose-wheel-tyre-inspection-and-replacement-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":119577,"registerId":"commonwealth-F2008L00602-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Twin Commander (Gulfstream/Rockwell/Aero","sectionType":"division","heading":"Twin Commander (Gulfstream/Rockwell/Aerocommander 500, 600 and 700) Series Aeroplanes","content":"### Twin Commander (Gulfstream/Rockwell/Aerocommander 500, 600 and 700) Series Aeroplanes\n\n| AD/AC/45 | Nose Wheel Tyre - Inspection and Replacement | 3/2008 |\n| -------- | -------------------------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                         |\n| ------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 13 March 2008.                                                                                                                                                                                             |\n| Background:  | This is a unique Australian AD, issued in 1971, requiring a one off replacement of a 4 ply nose wheel tyre with a 6 ply rated tyre. As all affected aircraft would have now accomplished this requirement, the AD is now obsolete. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n31 January 2008","sortOrder":0},{"sectionNumber":"AD/AC/45","sectionType":"part","heading":"AD/AC/45","content":"## AD/AC/45","sortOrder":1},{"sectionNumber":"Nose Wheel Tyre - Inspection and Replace","sectionType":"part","heading":"Nose Wheel Tyre - Inspection and Replacement","content":"## Nose Wheel Tyre - Inspection and Replacement","sortOrder":2},{"sectionNumber":"3/2008","sectionType":"part","heading":"3/2008","content":"## 3/2008","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1621},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument does not expand regulatory scope. It solely terminates a previous Airworthiness Directive that had been in force since 1971, reducing rather than expanding the regulatory burden."},"complexity_factors":["Single operative provision (cancellation only)","No defined terms or interpretation section","No conditional logic, exceptions, or cross-references to other legislation","Extremely short length (one substantive paragraph)","Straightforward historical background with no technical legal drafting"],"plain_english_summary":"This instrument cancels a 1971 CASA directive that required owners of Twin Commander 500/600/700 series aircraft to replace 4‑ply nosewheel tyres with 6‑ply units. CASA considers the mandate obsolete because affected aircraft would have completed the upgrade, so the rule is revoked and the associated ongoing compliance tracking is removed for owners and operators."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ac-45-nose-wheel-tyre-inspection-and-replacement-cancelled","history":"/api/acts/ad-ac-45-nose-wheel-tyre-inspection-and-replacement-cancelled/history","analysis":"/api/acts/ad-ac-45-nose-wheel-tyre-inspection-and-replacement-cancelled/analysis","conflicts":"/api/acts/ad-ac-45-nose-wheel-tyre-inspection-and-replacement-cancelled/conflicts","importantCases":"/api/acts/ad-ac-45-nose-wheel-tyre-inspection-and-replacement-cancelled/important-cases","documents":"/api/acts/ad-ac-45-nose-wheel-tyre-inspection-and-replacement-cancelled/documents"}}