Document ID: chunk:federal_register_of_legislation:F2007C00850:body:0:p2
Version: federal_register_of_legislation:F2007C00850
Segment Type: other
Provision Reference: 
Character Range: 2796–5636

above flight level 180 must be designed to cover the nose and mouth.
       5.1.4Every unit installed in an unpressurised aircraft on or after 10 January 1996 must meet the requirements of paragraph 5.1.6.
       5.1.5On and after 10 January 1999, every unit provided in an unpressurised aircraft must meet the requirements of paragraph 5.1.6.
       5.1.6For the purposes of paragraphs 5.1.4 and 5.1.5, a unit meets the requirements of this paragraph if the following information is clearly visible on it:
(a) a notice prohibiting smoking while the unit is used;
(b) an illustration showing how to put the unit on;
(c) a notice describing the dangers of flying with any kind of nasal obstruction or congestion.
       5.2For operations at altitudes up to and including 25 000 feet where section 20.4 of the Civil Aviation Orders requires the use of oxygen, each crew member must be provided with and have readily available, an oxygen supply terminal and dispensing unit.  For other occupants under these same circumstances, the supply terminals and dispensing equipment must be located to allow the use of oxygen as required by section 20.4 of the Civil Aviation Orders.
       5.3For operations above 25 000 feet, the provision of oxygen dispensing equipment must meet the following requirements:
(a) an oxygen dispensing unit which is connected to oxygen supply terminals must be immediately available to each occupant, wherever seated.  The total number of dispensing units and outlets must exceed the number of seats by at least 10%.  The extra units must be as uniformly distributed throughout the cabin as is practicable;
(b) crew members on flight deck duty must be provided with demand equipment.  In addition, an oxygen dispensing unit connected to an oxygen supply terminal, must be immediately available to each flight crew member when seated at his station.  Where a quick-donning type of oxygen mask is used to meet the requirements of section 20.4 of the Civil Aviation Orders, it must be demonstrated to the satisfaction of CASA that:
 (i) the mask is capable of being placed on the face from the ready position, properly secured, sealed, and supplying oxygen on demand, with 1 hand within 5 seconds;  and
 (ii) the mask can be donned without disturbing eye glasses and without delaying the flight crew member from proceeding with his assigned emergency duties; and
 (iii) immediately the donning action is completed, the flight crew member can communicate with other crew members over the aircraft intercommunication system;
(d) portable oxygen equipment must be immediately available for each cabin attendant.

6 Minimum mass flow of supplemental oxygen
       6.1If continuous flow equipment is installed for the use by flight crew members, the minimum mass flow of supplemental oxygen available for each crew member must