{"id":"F2009L02834","name":"AD/AUS/7 - Engine Mount Attachment Bolt - CANCELLED","slug":"ad-aus-7-engine-mount-attachment-bolt-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":80117,"registerId":"commonwealth-F2009L02834-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Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Auster/Beagle A.61 Series Aeroplanes","sectionType":"division","heading":"Auster/Beagle A.61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/7 | Engine Mount Attachment Bolt | 8/2009 |\n| -------- | ---------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                                                                             |\n| ------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 30 July 2009.                                                                                                                                                                                                                                                                                                  |\n| Background:  | This AD, raised in 1950, required a modification by replacing upper and lower engine mount attaching bolts marked \"NEWTON\" and replacing with high tensile steel bolts to B.S.S. Specification No. 2A.15. 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/7","sectionType":"part","heading":"AD/AUS/7","content":"## AD/AUS/7","sortOrder":1},{"sectionNumber":"Engine Mount Attachment Bolt","sectionType":"part","heading":"Engine Mount Attachment Bolt","content":"## Engine Mount Attachment Bolt","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":1864},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument simply terminates a spent Airworthiness Directive. It does not expand the scope of the original 1950 legislation; rather, it retires the requirement because it is no longer necessary."},"complexity_factors":["Single operative provision (cancellation)","No defined terms or interpretation section","No conditional logic, cross-references, or exceptions","Document consists primarily of historical background"],"plain_english_summary":"**What this does:** This document officially cancels an old aircraft safety rule (called an Airworthiness Directive or AD) from 1950.\n\n**Who it affects:** Owners and operators of Auster/Beagle A.61 series aeroplanes (light aircraft).\n\n**What the old rule required:** Back in 1950, the Civil Aviation Safety Authority (CASA) required owners to replace specific engine mount bolts marked \"NEWTON\" with stronger high-tensile steel bolts meeting British Standard Specification No. 2A.15. This was a safety fix that had to be done immediately.\n\n**Why it matters:** Since all affected aircraft were modified decades ago, the 1950 rule is now redundant. This cancellation formally removes the requirement from the aviation safety rules effective 30 July 2009, cleaning up the regulatory books."}},"importantCases":[],"_links":{"self":"/api/acts/ad-aus-7-engine-mount-attachment-bolt-cancelled","history":"/api/acts/ad-aus-7-engine-mount-attachment-bolt-cancelled/history","analysis":"/api/acts/ad-aus-7-engine-mount-attachment-bolt-cancelled/analysis","conflicts":"/api/acts/ad-aus-7-engine-mount-attachment-bolt-cancelled/conflicts","importantCases":"/api/acts/ad-aus-7-engine-mount-attachment-bolt-cancelled/important-cases","documents":"/api/acts/ad-aus-7-engine-mount-attachment-bolt-cancelled/documents"}}