{"id":"F2005B00484","name":"CASA 551/04 - Approval under subregulation 207(2)","slug":"casa-551-04-approval-under-subregulation-207-2","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":31898,"registerId":"commonwealth-F2005B00484-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"CASA 551/04 - Approval under subregulation 207(2)","content":"INSTRUMENT NUMBER: CASA 551/04\n\nCIVIL AVIATION ACT 1988\n\nCIVIL AVIATION REGULATIONS 1988\n\nAPPROVAL UNDER SUBREGULATION 207 (2)\n\nI, JAMES COYNE, Section Head, Systems, Airworthiness Standards Branch, CASA, a delegate of CASA, under subregulation 207 (2) of the Civil Aviation Regulations 1988 approve the aircraft bearing the nationality and registration marks VH-CBK in private and aerial work operations while fitted with nasal cannula type individual oxygen dispensing units manufactured under the name “Oxymizer”, providing that:\n\n(a) the units have a flow rate of not less than 03 litre per minute at 10,000 feet altitude, increasing by 0.1 litre per minute for every 2,000 feet up to 18,000 feet altitude; and\n\n(b) other individual oxygen dispensing units for use in the aircraft, that are designed to cover the nose and mouth, meet the requirements of paragraph 6.1 of section 108.26 of the Civil Aviation Orders and are provided in accordance with paragraph 5.1.2 of that section.\n\n\\[Signed J. Coyne\\]\n\nJames Coyne\n\nSection Head, Systems\n\nAirworthiness Standards Branch\n\n10 November 2004","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1543},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-purpose approval instrument for one specific aircraft. It has not expanded beyond its original intent of granting a tailored exemption for oxygen equipment configuration."},"complexity_factors":["Technical altitude-dependent flow rate calculations requiring mathematical progression","Cross-reference to Civil Aviation Orders 108.26 (paragraphs 6.1 and 5.1.2)","Conditional approval structure with dual requirements (primary and backup equipment)","Limited to specific aircraft registration (VH-CBK) and operation types (private and aerial work)"],"plain_english_summary":"This is a specific CASA approval allowing aircraft VH-CBK to use Oxymizer nasal cannulas (nostril oxygen tubes) instead of standard full-face masks for private flights and aerial work. It’s conditional on minimum oxygen flow rates that rise with altitude and on carrying standard nose-and-mouth backup masks that meet Civil Aviation Orders. It demonstrates CASA’s ability to grant tailored exemptions when safety conditions are met."}},"importantCases":[],"_links":{"self":"/api/acts/casa-551-04-approval-under-subregulation-207-2","history":"/api/acts/casa-551-04-approval-under-subregulation-207-2/history","analysis":"/api/acts/casa-551-04-approval-under-subregulation-207-2/analysis","conflicts":"/api/acts/casa-551-04-approval-under-subregulation-207-2/conflicts","importantCases":"/api/acts/casa-551-04-approval-under-subregulation-207-2/important-cases","documents":"/api/acts/casa-551-04-approval-under-subregulation-207-2/documents"}}