{"id":"F2005B00519","name":"CASA 423/03 - Approval under subregulation 207(2)","slug":"casa-423-03-approval-under-subregulation-207-2","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":31939,"registerId":"commonwealth-F2005B00519-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"CASA 423/03 - Approval under subregulation 207(2)","content":"INSTRUMENT NUMBER: CASA 423/03\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 operation of the aircraft bearing the nationality and registration marks VH‑JMW 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\n17 September 2003","sortOrder":0}],"analysis":{"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, applying only to the specific aircraft and equipment named. There is no indication this instrument has expanded beyond its original purpose of approving specific oxygen dispensing units for a single aircraft."},"complexity_factors":["Single-purpose instrument with no defined terms section","Only two operative conditions (paragraphs a and b)","Single cross-reference to Civil Aviation Orders (section 108.26)","No nested exceptions or conditional logic beyond the two straightforward requirements","Length: approximately 150 words of operative text"],"plain_english_summary":"This document is a specific approval from the Civil Aviation Safety Authority (CASA) allowing a particular aircraft (registration VH-JMW) to use a specific type of oxygen delivery device called an \"Oxymizer\" for passengers or crew.\n\n**What it does:**\nNormally, aviation regulations require oxygen masks that cover both the nose and mouth. This approval creates an exception for aircraft VH-JMW, permitting the use of nasal cannulas (small tubes that sit in the nostrils) instead—but only if two conditions are met:\n\n*   **Flow rate requirement:** The Oxymizer units must deliver oxygen at specific minimum rates depending on altitude—starting at 0.3 litres per minute at 10,000 feet and increasing gradually up to 18,000 feet.\n*   **Backup requirement:** The aircraft must still carry traditional oxygen masks (nose-and-mouth covering type) that meet standard safety requirements, as a backup.\n\n**Who it affects:**\nThis approval applies only to the specific aircraft with registration VH-JMW. It does not create a general rule for all aircraft.\n\n**Why it matters:**\nThis is an example of how aviation safety regulators can grant individual exemptions or approvals for specific equipment on specific aircraft, provided adequate safety measures (like backup systems) remain in place. It allows flexibility for operators while maintaining safety standards."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The instrument provides a targeted, conditional approval for a specific aircraft (VH‑JMW) to use a named oxygen device (Oxymizer). The text does not indicate any change to the underlying regulatory framework or to the general scope of the Civil Aviation Regulations; it grants a single, limited permission consistent with the delegate’s authority under subregulation 207(2)."},"complexity_factors":["Cross-reference to external material: requires consulting Civil Aviation Orders section 108.26 (paragraphs 6.1 and 5.1.2) to determine full compliance obligations.","Technical specification: altitude‑dependent flow‑rate schedule in condition (a) requires technical verification/testing of devices.","Narrow, device‑specific approval: names a specific device (“Oxymizer”) and a single aircraft registration (VH‑JMW), so scope and applicability are tightly constrained.","Delegated decision: issued by a CASA delegate under subregulation 207(2), requiring awareness of the delegate’s statutory power and record‑keeping.","Operational and maintenance implications: obligations for verification, installation and ongoing maintenance increase practical compliance steps for the operator."],"plain_english_summary":"This is a one‑off CASA approval allowing the specific aircraft VH‑JMW to carry and use Oxymizer nasal‑cannula oxygen units, subject to an altitude‑based minimum flow‑rate schedule and a requirement that any other nose‑and‑mouth oxygen units meet the Civil Aviation Orders’ relevant provisions.  \n\nIt affects VH‑JMW’s operator, crew, passengers and maintenance/suppliers — enabling use of Oxymizer but imposing testing, procurement and record‑keeping costs and compliance obligations on the operator."}},"importantCases":[],"_links":{"self":"/api/acts/casa-423-03-approval-under-subregulation-207-2","history":"/api/acts/casa-423-03-approval-under-subregulation-207-2/history","analysis":"/api/acts/casa-423-03-approval-under-subregulation-207-2/analysis","conflicts":"/api/acts/casa-423-03-approval-under-subregulation-207-2/conflicts","importantCases":"/api/acts/casa-423-03-approval-under-subregulation-207-2/important-cases","documents":"/api/acts/casa-423-03-approval-under-subregulation-207-2/documents"}}