Civil Aviation Amendment Order (No. R3) 2004 - Civil Aviation Order 20.4 - Provision & use of oxygen & protective breathing equipment (02/12/2004) Zoe has a public metadata record for this legal instrument, but accepted source text is not available in the agent mirror yet. Canonical page: https://zoelaw.ai/legislation/civil-aviation-amendment-order-no-r3-2004-civil-aviation-order-20-4-provision-use-of-oxygen-protecti