{"id":"F2005B00977","name":"CASA 268/97 - Approval under subregulation 207(2)","slug":"casa-268-97-approval-under-subregulation-207-2","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":32383,"registerId":"commonwealth-F2005B00977-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"CASA 268/97 - Approval under subregulation 207(2)","content":"INSTRUMENT NUMBER: CASA 268/97\n\nCIVIL AVIATION ACT 1988\n\nCIVIL AVIATION REGULATIONS\n\nAPPROVAL UNDER SUBREGULATION 207 (2)\n\nI, FRANK RICHARD HAMILTON GRIMSHAW, General Manager, Airworthiness Branch, CASA, a delegate of CASA, under subregulation 207 (2) of the Civil Aviation Regulations approve the operation of the aircraft bearing the nationality and registration marks VH-EDZ 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 Frank Richard Hamilton Grimshaw\\]\n\nFRANK RICHARD HAMILTON GRIMSHAW\n\nGeneral Manager\n\nAirworthiness Branch\n\n28 October 1997","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a specific delegated approval under subregulation 207(2) of the Civil Aviation Regulations. Its scope is intentionally narrow: it applies only to aircraft VH-EDZ and only to Oxymizer nasal cannula units. The instrument has not expanded beyond its original purpose; it remains a targeted, single-aircraft approval as originally intended by the enabling regulation."},"complexity_factors":["Single purpose instrument: only approves one specific device on one specific aircraft","Only 2 operative conditions (paragraphs a and b)","Single cross-reference to Civil Aviation Orders section 108.26","No defined terms section","No nested exceptions or conditional logic beyond the two straightforward conditions","Length: approximately 150 words of operative text"],"plain_english_summary":"This is a specific approval issued by the Civil Aviation Safety Authority (CASA) allowing a particular aircraft (registration VH-EDZ) to use a specific type of oxygen delivery device called an \"Oxymizer\" nasal cannula.\n\n**What it does:**\nNormally, aviation oxygen equipment must cover both nose and mouth. This approval creates an exception for aircraft VH-EDZ, permitting it to use nasal cannulas (tubes that sit in the nose only) instead.\n\n**Conditions attached:**\n*   **Flow rate requirement:** The Oxymizer units must deliver at least 0.3 litres of oxygen per minute at 10,000 feet altitude, and increase by 0.1 litres per minute for every 2,000 feet of additional altitude up to 18,000 feet.\n*   **Backup requirement:** The aircraft must still carry standard oxygen masks (covering nose and mouth) that meet normal aviation safety standards, as a backup.\n\n**Who it affects:**\n*   The operator/owner of aircraft VH-EDZ\n*   Pilots and passengers on that specific aircraft\n*   CASA inspectors monitoring compliance\n\n**Why it matters:**\nThis is a **delegated legislative instrument** (a specific permission granted under broader regulations). It shows how aviation safety rules can be adapted for individual cases while maintaining safety through strict conditions. The approval allows more comfortable oxygen delivery (nasal cannulas are less bulky than full masks) but ensures safety by requiring backup full masks and specific performance standards for the cannulas."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The instrument is an express, narrow approval permitting a named device (Oxymizer) on a single aircraft registration (VH-EDZ) subject to stated technical and cross-referenced conditions. The text contains no indication that it alters or expands an earlier or different regulatory scope; it effects a specific approval only and does not purport to change broader regulatory coverage."},"complexity_factors":["Narrow, single-aircraft scope reduces systemic complexity.","One clear technical requirement (flow-rate profile) is easy to apply.","Cross-reference to Civil Aviation Orders (section 108.26, paras 6.1 and 5.1.2) adds modest interpretive complexity because compliance depends on external provisions.","Delegated approval mechanism (subregulation 207(2)) requires understanding of delegation authority but is administratively simple.","No operational, financial or procedural details in the instrument increases need to consult operators/records for implementation (practical but not legal complexity)."],"plain_english_summary":"This CASA approval permits the specific aircraft VH‑EDZ to use the Oxymizer nasal‑cannula oxygen device, subject to a required flow‑rate profile with altitude and compliance with referenced Civil Aviation Orders for any other individual oxygen units. It directly affects the aircraft’s operator, crew and maintenance staff, who must verify the device meets the technical and regulatory conditions."}},"importantCases":[],"_links":{"self":"/api/acts/casa-268-97-approval-under-subregulation-207-2","history":"/api/acts/casa-268-97-approval-under-subregulation-207-2/history","analysis":"/api/acts/casa-268-97-approval-under-subregulation-207-2/analysis","conflicts":"/api/acts/casa-268-97-approval-under-subregulation-207-2/conflicts","importantCases":"/api/acts/casa-268-97-approval-under-subregulation-207-2/important-cases","documents":"/api/acts/casa-268-97-approval-under-subregulation-207-2/documents"}}