{"id":"F2006L03178","name":"AD/ECUREUIL/121 - Oxygen Cylinders - CANCELLED","slug":"ad-ecureuil-121-oxygen-cylinders-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":60478,"registerId":"commonwealth-F2006L03178-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/ECUREUIL/121 - Oxygen Cylinders - CANCELLED","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 20.2\ntitle: AIRCRAFT\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\n \n\nAIRWORTHINESS DIRECTIVE\n\nOn the effective date specified below, and for the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive AD/ECUREUIL/121.\n\n### Eurocopter AS 350 (Ecureuil) Series Helicopters\n\n| AD/ECUREUIL/121 | Oxygen Cylinders | 12/2006 TX |\n| --- | --- | --- |\n\n\n \n\n| Requirement: | CANCELLED.  This AD is replaced by AD/OXY/20. |\n| --- | --- |\n|  | This AD is cancelled on 26 September 2006. |\n| Background: | Original EASA Emergency AD 2006-0261-E was cancelled and superseded by EASA EAD 2006-0286-E. |\n\n\n![](image.001.png)\n\nJames Coyne  Delegate of the Civil Aviation Safety Authority\n\n22 September 2006\n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1435},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument performs a straightforward administrative cancellation of a superseded airworthiness directive and redirects affected parties to the current replacement. It does not expand regulatory scope beyond this housekeeping function."},"complexity_factors":["Single operative provision cancelling a previous directive","No defined terms or conditional logic","No substantive regulatory requirements imposed","Minimal cross-referencing limited to the replacement directive identifier"],"plain_english_summary":"This document **cancels** a previous aviation safety rule (Airworthiness Directive AD/ECUREUIL/121) concerning **oxygen cylinders** on **Eurocopter AS 350 (Ecureuil) series helicopters**.\n\n**What it does:**\n- Formally revokes the old directive effective 26 September 2006\n- Replaces it with a new directive: **AD/OXY/20**\n\n**Why it matters:**\nAirworthiness Directives are legally binding safety instructions issued by the Civil Aviation Safety Authority (CASA). This update ensures Australian operators follow the current safety standard after the European Aviation Safety Agency cancelled its original emergency directive and issued a replacement.\n\n**Who it affects:**\nOperators, pilots, and maintenance organisations responsible for Eurocopter AS 350 helicopters equipped with oxygen systems must now comply with the replacement directive AD/OXY/20 instead of this cancelled rule."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ecureuil-121-oxygen-cylinders-cancelled","history":"/api/acts/ad-ecureuil-121-oxygen-cylinders-cancelled/history","analysis":"/api/acts/ad-ecureuil-121-oxygen-cylinders-cancelled/analysis","conflicts":"/api/acts/ad-ecureuil-121-oxygen-cylinders-cancelled/conflicts","importantCases":"/api/acts/ad-ecureuil-121-oxygen-cylinders-cancelled/important-cases","documents":"/api/acts/ad-ecureuil-121-oxygen-cylinders-cancelled/documents"}}