Explain the regulations
regarding supplemental oxygen on board an aircraft?
If you are flying between
12,500 feet MSL, up to and including 14,000 feet MSL, the flight crew needs to
use supplemental oxygen if the flight duration in this level exceeds 30
minutes.
At and above 14,000 feet MSL
up to and including 15,000 feet MSL, the flight crew needs supplemental oxygen
the entire flight time.
At and above 15,000 feet MSL,
all occupants need to be provided supplemental oxygen.
