Sec. 25.1441 - Oxygen equipment and supply.
(a) If certification with supplemental
oxygen equipment is requested, the equipment must meet the requirements of
this section and §§25.1443 through 25.1453.
(b) The oxygen system must be free from
hazards in itself, in its method of operation, and in its effect upon
(c) There must be a means to allow the
crew to readily determine, during flight, the quantity of oxygen available
in each source of supply.
(d) The oxygen flow rate and the oxygen
equipment for airplanes for which certification for operation above 40,000
feet is requested must be approved.