Oxygen System Flashcards
Oxygen system consists of?
OBOGS and EOS
OBOGS consists of?
normal and backup systems
When will OBOGS provide on demand O2?
from ground to 45000 ft MSL
OBOGS takes bleed air from the ___ through a ______ separator, a _______, and two ________.
ECS, water, molecular sieve oxygen concentrator (MSOC), regulators
MSOC removes what from the air to increase O2 content?
Nitrogen
Above what cabin alt does OBOGS provide 100% O2 from the BOS?
30000ft
When is BOS activation prevented?
When the seat is safe.
What allows the activation of the high-pressure oxygen charged bottle under the seat pan (BOS) in the event of total electrical failure or ejection?
A battery pack installed behind each ejection seat.
EOS consists of a _________ cylinder (0.5L at 124 bar).
pressurized oxygen
EOS ensures at least _____ of oxygen at _______ft cabin alt.
10 mins, 25000
Never unlatch mask for more than ___sec if above _____ cabin altitude.
25, 12000ft
OBOGS caution
OBOGS concentrator is faulty or leak (low concentration)
F/A BOS LOW caution
front or aft BOS bottle endurance reduced below min required to reach safe alt
F/A OXY FLOW caution
no or continuous oxy flow from front or aft regulator
F/A OXY REG caution
front or aft oxygen reg de-energized or faulty
