Document ID: chunk:federal_register_of_legislation:F2005B00777:body:0:p4
Version: federal_register_of_legislation:F2005B00777
Segment Type: other
Provision Reference: 
Character Range: 7692–10470

supplemental oxygen at all times during which the aircraft flies above Flight Level 140.
 Supplemental oxygen for passengers
6.4 Where an unpressurised aircraft carrying passengers flies for more than 30 minutes above 10 000 feet altitude and up to and including Flight Level 140, the aircraft must carry sufficient supplemental oxygen to supply:
 (a) 10% of the passengers with oxygen for 30 minutes; or
 (b) 20% of the passengers with oxygen for 15 minutes.
6.5 Where an unpressurised aircraft carrying passengers flies above Flight Level 140, the aircraft must carry sufficient supplemental oxygen to supply each passenger with oxygen during all periods that the aircraft flies above Flight Level 140.
7 SUPPLEMENTAL OXYGEN REQUIREMENTS FOR PRESSURISED AIRCRAFT ENGAGED IN FLIGHTS NOT ABOVE FLIGHT LEVEL 250
 Application
7.1 This subsection applies to pressurised aircraft that do not fly above Flight Level 250.
 Manner of calculating supplemental oxygen supply
7.2 In determining the amount of oxygen required to be carried on a pressurised aircraft for the purposes of paragraphs 7.3, 7.4 and 7.5, an operator is to determine that amount on the basis that:
 (a) a cabin pressurisation failure will occur at a point on the planned route which is most critical from the standpoint of oxygen need; and
 (b) after the failure, the aircraft will descend in accordance with the emergency procedures specified in the aircraft's flight manual (without exceeding its normal operating limitations) to a flight altitude or a Flight Level, as the case may be, that will allow the safe termination of the flight.
 Supplemental oxygen for flight crew members
7.3 A flight crew member who is on flight deck duty in a pressurised aircraft to which this subsection applies must:
 (a) be provided with at least a 15 minute supply of supplemental oxygen whenever the aircraft is to be operated above 10 000 feet flight altitude; and
 (b) use supplemental oxygen at all times during which the cabin altitude exceeds 10 000 feet.
 Supplemental oxygen for other crew members
7.4 A crew member (not being a flight crew member on flight deck duty) in a pressurised aircraft to which this subsection applies must:
 (a) be provided with supplemental oxygen at all times during which the cabin altitude exceeds 10 000 feet; and
 (b)  use supplemental oxygen at all times during which the cabin pressure altitude exceeds Flight Level 140.
 Supplemental oxygen for passengers
7.5 A pressurised aircraft to which this subsection applies that is to be operated above 10 000 feet flight altitude must carry sufficient supplemental oxygen:
 (a)  where the aircraft can safely descend to Flight Level 140 or a lower level within 4 minutes at all points along the planned route and maintain Flight Level 140