Document ID: chunk:federal_register_of_legislation:F2024C01173:reg:1
Version: federal_register_of_legislation:F2024C01173
Segment Type: reg
Provision Reference: reg 1
Character Range: 264276–268470

1                                                                         Flight crew members or assisting crew members                             1. There must be supply for each flight crew member and for each assisting crew member for the entire period when the cabin pressure altitude is above 13 000 ft.
                                                                                                                                                    2.(a) For an aeroplane that is not flown at any time during a flight above a pressure altitude of 25 000 ft—for any period exceeding 30 minutes, when the cabin pressure altitude is above 10 000 ft but not above 13 000 ft, there must be supply for each flight crew member and for each assisting crew member for the entire period;
                                                                                                                                                     (b) Without otherwise affecting paragraph (a):
                                                                                                                                                 (i) there must be a minimum of at least 30 minutes supply for each flight crew member and for each assisting crew member even if the entire period may be less than 30 minutes; and
                                                                                                                                                 (ii) the supply mentioned in subparagraph (i) must encompass the quantity of oxygen necessary for the aeroplane descending at a constant rate:
                                                                                                                                                        (A) from the lesser of the aeroplane's maximum certified operating altitude and a pressure altitude of 25 000 ft; and
                                                                                                                                                        (B) to a pressure altitude of 10 000 ft in 10 minutes;
                                                                                                                                                  followed by 20 minutes at a pressure altitude of 10 000 ft.
                                                                                                                                                    3.(a) For an aeroplane that is flown at any time during the flight above a pressure altitude of 25 000 ft —for any period exceeding 30 minutes when the cabin pressure altitude is above 10 000 ft but not above 13 000 ft, there must be supply for each flight crew member and for each assisting crew member for the entire period.
                                                                                                                                                     (b) Without otherwise affecting paragraph (a):
                                                                                                                                                 (i) there must be at least 2 hours supply for each flight crew member and for each assisting crew member even if the entire period may be less than 2 hours; and
                                                                                                                                                 (ii) the supply mentioned in subparagraph (i) must encompass the quantity of oxygen necessary for the aeroplane descending at a constant rate:
                                                                                                                                                        (A) from the aeroplane's maximum certified operating altitude; and
                                                                                                                                                        (B) to a pressure altitude of 10 000 ft in 10 minutes;
                                                                                                                                                  followed by a time period of 110 minutes at a pressure altitude of 10 000 ft.