{"id":"F2012L00934","name":"CASA ADCX 009/12 - Revocation of Airworthiness Directives","slug":"casa-adcx-009-12-revocation-of-airworthiness-directives","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":89274,"registerId":"commonwealth-F2012L00934-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"CASA ADCX 009/12 - Revocation of Airworthiness Directives","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-description: Revocation of directions\nmeta-generator: Aspose.Words for .NET 20.2\ntitle: CASA 354/06\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nInstrument number CASA ADCX 009/12\n\nI, MICHAEL JAMES HIGGINS, Manager, Continuing Airworthiness, a delegate of CASA, make this instrument under subregulation 39.001 (1) of the Civil Aviation Safety Regulations 1998.\n\n![](image.001.png)\n\nMike Higgins  A/Manager\n\nContinuing Airworthiness\n\n24 April 2012\n\nRevocation of Airworthiness Directives\n\n1 Commencement\n\n This instrument commences on 27 April 2012.\n\n2 Revocation\n\n Each Airworthiness Directive (AD) mentioned in Schedule 1 is revoked on the date specified for it in the Schedule.\n\nSchedule 1 Revocation of ADs\n\n| AD | Revocation date |\n| --- | --- |\n| AD/ARRIEL/28 | 1 May 2012 |\n\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1747},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The instrument performs exactly the limited function described in its title—revoking one specific Airworthiness Directive. No expansion of scope detected."},"complexity_factors":["Ultra-short instrument containing only 2 operative sections and 1 schedule item","No interpretation section or defined terms","Single, unqualified legal operation (revocation) with no exceptions or conditions","Only one external reference (to the enabling regulation)"],"plain_english_summary":"**What this does:** This instrument cancels (revokes) a specific aircraft safety rule called Airworthiness Directive AD/ARRIEL/28.\n\n**Who it affects:** Aircraft operators, owners, and maintenance engineers responsible for Turbomeca Arriel helicopter engines.\n\n**Why it matters:** As of 1 May 2012, the maintenance, inspection, or modification requirements specified in AD/ARRIEL/28 are no longer legally mandatory. This removes a compliance burden for affected aircraft, typically because the underlying safety issue has been resolved through design changes, fleet retirement, or replacement by newer directives."}},"importantCases":[],"_links":{"self":"/api/acts/casa-adcx-009-12-revocation-of-airworthiness-directives","history":"/api/acts/casa-adcx-009-12-revocation-of-airworthiness-directives/history","analysis":"/api/acts/casa-adcx-009-12-revocation-of-airworthiness-directives/analysis","conflicts":"/api/acts/casa-adcx-009-12-revocation-of-airworthiness-directives/conflicts","importantCases":"/api/acts/casa-adcx-009-12-revocation-of-airworthiness-directives/important-cases","documents":"/api/acts/casa-adcx-009-12-revocation-of-airworthiness-directives/documents"}}