{"id":"F2005B00645","name":"CASA 540/00 - Approval under subregulation 207(2)","slug":"casa-540-00-approval-under-subregulation-207-2","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":32121,"registerId":"commonwealth-F2005B00645-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"CASA 540/00 - Approval under subregulation 207(2)","content":"INSTRUMENT NUMBER: CASA 540/00\n\nCIVIL AVIATION ACT 1988\n\nCIVIL AVIATION REGULATIONS 1988\n\nAPPROVAL UNDER SUBREGULATION 207 (2)\n\nI, EUGENE HOLZAPFEL, Acting Section Head, Systems, Certification Standards 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-STT 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 E. Holzapfel\\]\n\nEugene Holzapfel\n\nActing Section Head, Systems\n\nCertification Standards Branch\n\n15 December 2000","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"This instrument grants a limited, specific approval for the operation of aircraft VH‑STT with specified nasal cannula oxygen units (Oxymizer) subject to stated conditions. It does not amend or expand the underlying regulations; it operates within the regulatory power to approve particular equipment under subregulation 207(2). The text contains no indication that it alters the broader scope of the Civil Aviation Regulations or the Civil Aviation Orders."},"complexity_factors":["Narrow, single‑aircraft approval reduces breadth of issues to consider","Numeric, altitude‑dependent flow‑rate formula (0.3 L/min at 10,000 ft; +0.1 L/min per 2,000 ft to 18,000 ft) requires technical verification","Cross‑reference to external Civil Aviation Orders (section 108.26, paras 6.1 and 5.1.2) requires consulting another instrument for full compliance criteria","Delegated administrative decision under subregulation 207(2) gives effect to a specific exemption/approval rather than changing primary legislation","Operational compliance and verification burden is on the aircraft operator, which may involve technical testing or reliance on manufacturer data"],"plain_english_summary":"What this instrument does (mechanically)\n\n- This is a written approval under subregulation 207(2) of the Civil Aviation Regulations 1988 that permits the aircraft with registration VH‑STT to operate when fitted with a particular nasal‑cannula style oxygen product sold as “Oxymizer”. The approval is signed by a CASA delegate (E. Holzapfel). (CASA 540/00, header)\n\n- The approval sets two conditions the aircraft operator must meet: (a) the Oxymizer units must deliver at least 0.3 litres per minute at 10,000 feet, and the required flow must increase by 0.1 litre per minute for every additional 2,000 feet up to 18,000 feet; and (b) any other individual oxygen dispensing units used in the aircraft that are designed to cover nose and mouth must comply with paragraph 6.1 of section 108.26 of the Civil Aviation Orders and be provided in accordance with paragraph 5.1.2 of that section. (CASA 540/00, paras (a)–(b))\n\nWho decides and who must act\n\n- A CASA delegate decided to grant this specific approval under subregulation 207(2). (CASA 540/00, header)\n\n- The immediate obligations fall to the aircraft operator of VH‑STT: they must fit and provide the approved Oxymizer units and ensure any alternative individual oxygen units meet the Civil Aviation Orders requirements cited. (CASA 540/00, paras (a)–(b))\n\nWhy the instrument matters (as stated and as implied by its mechanics)\n\n- Stated function: it authorises a named oxygen dispensing product for use in a named aircraft subject to quantitative performance and cross‑referenced compliance requirements. (CASA 540/00, header; paras (a)–(b)).\n\n- Practical implications and trade‑offs you can infer from the text: who pays, what changes, and what compliance looks like\n  - Who pays: the aircraft operator bears the cost of supplying and maintaining the approved Oxymizer units and of providing any other compliant individual oxygen units. (CASA 540/00, paras (a)–(b))\n  - Who decides day‑to‑day compliance: the operator must ensure units meet the flow‑rate formula and the Civil Aviation Orders’ requirements; CASA’s delegate granted the approval but ongoing verification and maintenance are operational responsibilities. (CASA 540/00, header; paras (a)–(b))\n  - Compliance burden: the operator needs to demonstrate the Oxymizer units meet altitude‑dependent flow‑rate requirements (a numerical standard spanning 10,000–18,000 feet) and must refer to external Civil Aviation Orders for conformity of other nose‑and‑mouth devices. Verifying flow at specified altitudes and ensuring document cross‑references are met are concrete compliance steps. (CASA 540/00, para (a); para (b))\n  - Effects on private parties: the named product (Oxymizer) and its manufacturer gain an explicit permission to be used on a specified aircraft, while the operator gains a defined compliance pathway. Other manufacturers or suppliers of individual oxygen units are required to meet the Civil Aviation Orders provisions to be used instead. (CASA 540/00, header; para (b))\n  - Implementation risks and operational detail: proving the device meets the stated flow rates at the specified altitudes requires testing or performance data at those conditions; the instrument does not itself provide testing protocols, so the operator must rely on appropriate measurement or manufacturer data and on compliance checks against the Civil Aviation Orders. (CASA 540/00, para (a); para (b))\n\nWhat the instrument does not do\n\n- It does not amend the Civil Aviation Regulations or the Civil Aviation Orders; it is a case‑specific approval for one aircraft and a named device that imposes conditions for that approval. (CASA 540/00, whole instrument)\n\nReferences to the instrument text: approval issued under subregulation 207(2); conditions set out in paragraphs (a) and (b); signed by Eugene Holzapfel, Acting Section Head, Systems, Certification Standards Branch (15 December 2000). (CASA 540/00, header; paras (a)–(b); signature block)"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard individual approval instrument issued under subregulation 207(2) of the Civil Aviation Regulations 1988. Its scope is precisely limited to approving a specific oxygen dispensing unit (Oxymizer) for a specific aircraft (VH-STT). It has not expanded beyond its original purpose; it is functioning exactly as intended for a one-off regulatory approval."},"complexity_factors":["Single-purpose instrument: only approves one specific device on one specific aircraft","Only 2 operative conditions (paragraphs a and b)","Minimal cross-referencing: references only subregulation 207(2) of CAR 1988 and Civil Aviation Orders section 108.26","No defined terms section","Straightforward conditional logic: simple 'if X then Y' structure with two cumulative requirements","Length: approximately 150 words of operative text"],"plain_english_summary":"This is a specific approval from the Civil Aviation Safety Authority (CASA) allowing a particular aircraft (registration VH-STT) to use a specific type of oxygen delivery device called an \"Oxymizer\" for passengers or crew who need supplemental oxygen.\n\n**What it does:**\n- Permits the use of nasal cannula oxygen units (small tubes that sit in the nose) instead of the more common full face masks that cover nose and mouth\n- Sets strict technical requirements for how much oxygen these units must deliver at different altitudes\n- Requires that standard face-mask oxygen units must still be available on the aircraft as backup\n\n**Who it affects:**\n- The operator of aircraft VH-STT\n- Passengers and crew who may need oxygen during flight\n- CASA itself, as the aviation safety regulator\n\n**Why it matters:**\nNormally, aviation regulations require oxygen masks that cover both nose and mouth. This approval allows an exception for a specific aircraft to use lighter, more comfortable nasal cannulas instead—but only if they meet precise flow-rate requirements and the aircraft still carries standard masks as well. It's a tailored safety approval showing how aviation law balances innovation (better passenger comfort) with strict safety standards."}},"importantCases":[],"_links":{"self":"/api/acts/casa-540-00-approval-under-subregulation-207-2","history":"/api/acts/casa-540-00-approval-under-subregulation-207-2/history","analysis":"/api/acts/casa-540-00-approval-under-subregulation-207-2/analysis","conflicts":"/api/acts/casa-540-00-approval-under-subregulation-207-2/conflicts","importantCases":"/api/acts/casa-540-00-approval-under-subregulation-207-2/important-cases","documents":"/api/acts/casa-540-00-approval-under-subregulation-207-2/documents"}}