Oxygen

Question 1

Protection provided by cockpit O2 after loss of cabin pressure with MIN BOTTLE PRESSURE

Answer 1

with mask regulator on NORMAL (diluted oxygen):

▪ During emergency descent: for all flight crewmembers and observers for 13 min
▪ During cruise at FL 100: for two flight crewmembers for 107 min

In case of smoke, with 100 % oxygen:

for all flight crewmembers and observers during 15 min at 8 000 ft cabin altitude