If all occupants of flight deck seats are supplied from the flight crew source of oxygen supply then they shall be considered as flight crew members on flight deck duty for the purpose of oxygen supply. Flight deck seat occupants, not supplied by the flight crew source, are to be considered as passengers for the purpose of oxygen supply.
Les occupants des sièges du poste de pilotage non alimentés en oxygène équipage sont considérés comme des passagers, pour ce qui concerne l'alimentation en oxygène.