{"id":"F2005B00653","name":"CASA 48/99 - Approval under subregulation 207(2)","slug":"casa-48-99-approval-under-subregulation-207-2","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":32128,"registerId":"commonwealth-F2005B00653-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"CASA 48/99 - Approval under subregulation 207(2)","content":"INSTRUMENT NUMBER: CASA 48/99\n\nCIVIL AVIATION ACT 1988\n\nCIVIL AVIATION REGULATIONS 1988\n\nAPPROVAL UNDER SUBREGULATION 207 (2)\n\nI, EUGENE HOLZAPFEL, Manager Technical Specialists, Airworthiness Branch, CASA, a delegate of CASA, under subregulation 207 (2) of the Civil Aviation Regulations 1988 approve the operation of the aircraft bearing the nationality and registration marks VH-TYE 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 3 litre per minute at 10,000 feet altitude, increasing by .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 E. Holzapfel\\]\n\nEUGENE HOLZAPFEL\n\nManager Technical Specialists\n\nAirworthiness Branch\n\n26 February 1999","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"This instrument narrows the application of the general regulatory regime by granting a specific approval for aircraft VH-TYE to operate with Oxymizer nasal-cannula oxygen units subject to conditions (paragraphs (a) and (b)). It does not amend the Civil Aviation Regulations or Civil Aviation Orders generally; rather it creates an aircraft-specific permission under subregulation 207(2) that alters how the rules apply to that particular aircraft (instrument header and paragraphs (a) and (b))."},"complexity_factors":["Narrow, aircraft-specific approval (applies only to VH-TYE) which simplifies legal scope but requires individual operator compliance.","Technical, altitude-dependent oxygen flow-rate schedule (paragraph (a)) requiring measurement or calibration to demonstrate compliance.","Cross-reference to external Civil Aviation Orders (section 108.26, paragraphs 6.1 and 5.1.2) creates additional compliance steps and possible interpretive work (paragraph (b)).","Delegated administrative discretion: approval issued under subregulation 207(2) by a named CASA delegate, so similar approvals may depend on delegate practice and record-keeping.","Operational implementation tasks (equipment supply, testing, maintenance, documentation) fall to the operator and are not detailed in the instrument, leaving procedural choices to be resolved operationally."],"plain_english_summary":"This instrument is an aircraft-specific CASA approval allowing VH‑TYE to use Oxymizer nasal‑cannula oxygen devices, provided those units meet a specified altitude-based flow‑rate schedule and other on‑board individual oxygen units meet the referenced Civil Aviation Orders requirements.  \n\nThe operator of VH‑TYE must supply, test, install and maintain compliant Oxymizer and other oxygen units at its own cost; the approval is narrowly targeted and does not change broader regulatory text."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a specific individual approval instrument under subregulation 207(2) of the Civil Aviation Regulations 1988. Such instruments are inherently narrow in scope by design, applying only to the specific aircraft and equipment named. There is no indication this instrument has expanded beyond its original purpose of approving alternative oxygen dispensing equipment for a single aircraft."},"complexity_factors":["Single purpose instrument applying to one specific aircraft (VH-TYE)","Only two operational conditions with clear technical specifications","No defined terms section","Minimal cross-referencing (only to Civil Aviation Orders section 108.26)","No nested exceptions or conditional logic","Total length: approximately 150 words"],"plain_english_summary":"This is a specific approval from Australia's aviation safety regulator (CASA) allowing a particular aircraft (registration VH-TYE) to use a specific type of oxygen delivery device called an \"Oxymizer\" nasal cannula.\n\n**What it does:**\n- Permits the aircraft to use nasal cannula oxygen units instead of the standard full face masks that cover nose and mouth\n- Sets strict technical requirements for how these units must perform at different altitudes\n\n**Who it affects:**\n- The operator of aircraft VH-TYE\n- Passengers and crew using supplemental oxygen on this specific aircraft\n\n**The conditions:**\n- The Oxymizer units must deliver at least 0.3 litres of oxygen per minute at 10,000 feet, with increasing flow rates at higher altitudes (up to 18,000 feet)\n- The aircraft must still carry standard full face mask oxygen units as backup, and these must meet specific technical standards set out in the Civil Aviation Orders\n\n**Why it matters:**\nThis is a tailored safety approval allowing a specific aircraft to use more comfortable nasal cannula oxygen delivery (which fits under the nose) rather than bulkier full face masks, provided strict performance standards are met and proper backup equipment is available."}},"importantCases":[],"_links":{"self":"/api/acts/casa-48-99-approval-under-subregulation-207-2","history":"/api/acts/casa-48-99-approval-under-subregulation-207-2/history","analysis":"/api/acts/casa-48-99-approval-under-subregulation-207-2/analysis","conflicts":"/api/acts/casa-48-99-approval-under-subregulation-207-2/conflicts","importantCases":"/api/acts/casa-48-99-approval-under-subregulation-207-2/important-cases","documents":"/api/acts/casa-48-99-approval-under-subregulation-207-2/documents"}}