{"id":"F2010L02329","name":"CASA ADCX 021/10 - Revocation of Airworthiness Directives","slug":"casa-adcx-021-10-revocation-of-airworthiness-directives","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":125102,"registerId":"commonwealth-F2010L02329-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"CASA ADCX 021/10 - Revocation of Airworthiness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 021/10\n\nI, DAVID ALAN VILLIERS, Manager, Initial Airworthiness, a delegate of CASA, make this instrument under subregulation 39.001 (1) of the Civil Aviation Safety Regulations 1998.\n\n \n\n![](image.001.png)\n\nDavid Villiers  Manager\n\nInitial Airworthiness\n\n18 August 2010\n\nRevocation of Airworthiness Directives\n\n1 Commencement\n\n This instrument commences on 26 August 2010.\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/DO 328/73 | 27 August 2010 |\n| AD/EC 135/22 | 27 August 2010 |\n| AD/GBK 117/24 | 27 August 2010 |\n| AD/RB211/39 | 27 August 2010 |\n\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1131},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The instrument precisely matches its stated purpose of revoking specific Airworthiness Directives. There is no expansion beyond the original scope."},"complexity_factors":["Only 2 operative provisions (commencement and revocation)","No defined terms or interpretation section","Simple tabular schedule with 4 entries","No conditional language or exceptions","Single, straightforward purpose with no cross-references to other legislation except the enabling regulation"],"plain_english_summary":"**What this does:**\nThis instrument cancels four specific Airworthiness Directives (mandatory safety instructions) that previously required owners or operators of certain aircraft and engines to carry out specific maintenance or modifications.\n\n**Who it affects:**\nOwners and operators of:\n- **Dornier 328** aircraft (AD/DO 328/73)\n- **Eurocopter EC135** helicopters (AD/EC 135/22)  \n- **Gippsland GA8 Airvan** aircraft (AD/GBK 117/24)\n- Aircraft with **Rolls-Royce RB211** engines (AD/RB211/39)\n\n**What changes:**\nAs of **27 August 2010**, the four safety directives listed above are no longer legally binding. This means the mandatory inspections, repairs, or modifications previously required by those directives are no longer compulsory.\n\n**Why it matters:**\nRemoving outdated or superseded safety requirements reduces compliance costs and administrative burden for aircraft operators, while CASA maintains safety oversight through other means (such as newer directives or different regulatory pathways)."}},"importantCases":[],"_links":{"self":"/api/acts/casa-adcx-021-10-revocation-of-airworthiness-directives","history":"/api/acts/casa-adcx-021-10-revocation-of-airworthiness-directives/history","analysis":"/api/acts/casa-adcx-021-10-revocation-of-airworthiness-directives/analysis","conflicts":"/api/acts/casa-adcx-021-10-revocation-of-airworthiness-directives/conflicts","importantCases":"/api/acts/casa-adcx-021-10-revocation-of-airworthiness-directives/important-cases","documents":"/api/acts/casa-adcx-021-10-revocation-of-airworthiness-directives/documents"}}