{"id":"F2009L02837","name":"AD/AUS/1 - Lift Strut - CANCELLED","slug":"ad-aus-1-lift-strut-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":80126,"registerId":"commonwealth-F2009L02837-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Auster/Beagle A.61 Series Aeroplanes","sectionType":"division","heading":"Auster/Beagle A.61 Series Aeroplanes","content":"### Auster/Beagle A.61 Series Aeroplanes\n\n| AD/AUS/1 | Lift Strut | 8/2009 |\n| -------- | ---------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                                             |\n| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n|              | This AD is cancelled on 30 July 2009.                                                                                                                                                                                                                                                                  |\n| Background:  | This AD, raised in 1950 against Auster Service Bulletin (SB) SB issues 2 and 3, required a maintenance action for lift struts of all models manufactured before May 1947. Compliance was required forthwith.As all affected aircraft would have been modified long ago, this AD is no longer required. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n18 June 2009","sortOrder":0},{"sectionNumber":"AD/AUS/1","sectionType":"part","heading":"AD/AUS/1","content":"## AD/AUS/1","sortOrder":1},{"sectionNumber":"Lift Strut","sectionType":"part","heading":"Lift Strut","content":"## Lift Strut","sortOrder":2},{"sectionNumber":"8/2009","sectionType":"part","heading":"8/2009","content":"## 8/2009","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1774},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":true,"description":"The legislation has moved from an active mandate (requiring immediate maintenance on lift struts) to complete cancellation. The original safety requirement has been eliminated rather than expanded, as all affected aircraft were remediated decades prior to this 2009 cancellation."},"complexity_factors":["Document contains only a single operative provision (cancellation)","No defined terms, interpretation sections, or schedules","No cross-references to other legislation (only historical reference to the 1950 directive)","No conditional logic, exceptions, or procedural requirements"],"plain_english_summary":"**What this is:** This document officially cancels Australia's very first Airworthiness Directive (AD/AUS/1), a safety rule originally issued in 1950.\n\n**What the old rule did:** It required urgent maintenance on the **lift struts** (the metal supports connecting the wings to the fuselage) of Auster/Beagle A.61 series aeroplanes manufactured before May 1947. Owners had to comply immediately.\n\n**Why it matters:** The rule is being cancelled because all affected aircraft were modified decades ago. As of 30 July 2009, this maintenance requirement no longer applies to anyone.\n\n**Who is affected:** Technically, owners of vintage Auster/Beagle aircraft, though practically speaking, nobody needs to do anything—the work was completed long ago."}},"importantCases":[],"_links":{"self":"/api/acts/ad-aus-1-lift-strut-cancelled","history":"/api/acts/ad-aus-1-lift-strut-cancelled/history","analysis":"/api/acts/ad-aus-1-lift-strut-cancelled/analysis","conflicts":"/api/acts/ad-aus-1-lift-strut-cancelled/conflicts","importantCases":"/api/acts/ad-aus-1-lift-strut-cancelled/important-cases","documents":"/api/acts/ad-aus-1-lift-strut-cancelled/documents"}}