{"id":"F2009L03025","name":"AD/MSR/29 - Engine Mount - CANCELLED","slug":"ad-msr-29-engine-mount-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":80578,"registerId":"commonwealth-F2009L03025-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Aerospatiale Rallye Series Aeroplanes","sectionType":"division","heading":"Aerospatiale Rallye Series Aeroplanes","content":"### Aerospatiale Rallye Series Aeroplanes\n\n| AD/MSR/29 | Engine Mount | 9/2009 |\n| --------- | ------------ | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                               |\n| ------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 27 August 2009.                                                                                                                                                                                                                  |\n| Background:  | This unique Australian AD specified periodic inspection of the engine mount in accordance with Service Bulletin No. 146. Inspection was required at each issue of a maintenance release. Use of an AD to mandate this inspection is no longer justified. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n30 June 2009","sortOrder":0},{"sectionNumber":"AD/MSR/29","sectionType":"part","heading":"AD/MSR/29","content":"## AD/MSR/29","sortOrder":1},{"sectionNumber":"Engine Mount","sectionType":"part","heading":"Engine Mount","content":"## Engine Mount","sortOrder":2},{"sectionNumber":"9/2009","sectionType":"part","heading":"9/2009","content":"## 9/2009","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1701},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":true,"description":"This instrument completely eliminates the previous mandatory inspection requirements. The original AD required periodic engine mount inspections at each maintenance release issue. This cancellation version removes all operative requirements, reducing the scope from active regulatory mandates to nil."},"complexity_factors":["Single page cancellation notice with no operative provisions beyond the cancellation statement","No defined terms or interpretation sections","No cross-references to primary legislation or regulations","Unconditional cancellation with no exceptions, conditions, or transitional arrangements"],"plain_english_summary":"This document scraps a previous aviation safety rule about engine mounts on Aerospatiale Rallye aircraft.\n\n**What it does:**\n- Cancels Airworthiness Directive (AD) AD/MSR/29 effective 27 August 2009\n- Removes the legal requirement for owners to inspect engine mounts at every **maintenance release** (the periodic certificate proving your aircraft is safe to fly)\n\n**Who it affects:**\n- Owners and operators of Aerospatiale Rallye series aeroplanes\n\n**Why it matters:**\nPreviously, you had to inspect the engine mount using **Service Bulletin No. 146** (a manufacturer's technical notice) every time you renewed your maintenance release. The Civil Aviation Safety Authority has decided this specific inspection no longer needs to be legally mandated by an Airworthiness Directive. While you should still follow the aircraft manufacturer's recommendations, this particular check is no longer enforced by this specific safety rule."}},"importantCases":[],"_links":{"self":"/api/acts/ad-msr-29-engine-mount-cancelled","history":"/api/acts/ad-msr-29-engine-mount-cancelled/history","analysis":"/api/acts/ad-msr-29-engine-mount-cancelled/analysis","conflicts":"/api/acts/ad-msr-29-engine-mount-cancelled/conflicts","importantCases":"/api/acts/ad-msr-29-engine-mount-cancelled/important-cases","documents":"/api/acts/ad-msr-29-engine-mount-cancelled/documents"}}