Oxygen

Question 1

The fight deck oxygen mask system consists of _______.

Answer 1

3 oxygen masks, and storage containers,

crew oxygen cylinder, refill point

Question 2

Oxygen permits a decent from 41,000 ft. to 10,000 ft. for up to 22 minutes and then
a continuation at 10,000 ft. for _______ minutes.

Answer 2

98 minutes

(from 41,000 ft. to 10,000 ft. in 22 minutes with mask regulator at 100% mode and continuing cruise at 10,000 ft for 98 minutes with mask regulator on NORM mode. 14.5 Vol 2)

Question 3

The oxygen mask regulator has _______ positions.

Answer 3

3 [normal, 100%, emergency]

Question 4

The oxygen pressure is continuously monitored and is displayed on the _______.

Answer 4

Status synoptic page

Question 5

_______ dashes indicate invalid crew oxygen information or a value out of the
valid range.

Answer 5

amber

Question 6

In order to reset the oxygen mask and communications back to normal after the
oxygen masks have been removed, pilots must accomplish which of the following?

Answer 6

Close the stowage box and press Reset Button

Question 7

What produces oxygen for passengers if pressurization is lost?

Answer 7

Individual chemical oxygen generators

Question 8

True or False: A PAX OXY NOT DEPLOYED caution message will display on the
EICAS if the masks did not deploy after an automatic or manual command.

Answer 8

True

Question 9

True or False: The passenger oxygen masks will only deploy if manually
commanded.

Answer 9

False

Question 10

Passenger oxygen supplies _______ minutes of flow.

Answer 10

Approximately 12 min.

Question 11

True or False: Oxygen is available in the lavatories in the event of a pressurization loss.

Answer 11

True

Question 12

True or False: There is no way to determine crew oxygen pressure from the flight
deck. It can only be done at the bottle.

Answer 12

False

Question 13

True or False: The passenger oxygen masks provide smoke protection.

Answer 13

False

Question 14

Each passenger overhead oxygen compartment is equipped with a storage door
that is normally held closed by an electrical latching mechanism. This automatically
releases when the cabin altitude reaches approximately _______.

Answer 14

14,000 ft

Question 15

True or False: Each passenger overhead oxygen compartment is equipped with a
storage door that is normally held closed by an electrical latching mechanism. This
automatically releases when the cabin altitude reaches approximately 10,000 ft.

Answer 15

False [14,000 ft]

Question 16

Portable oxygen is located _______ for walk-around or portable use in the cabin.

Answer 16

Near each flight attendant station

Question 17

The PBE can supply oxygen for approximately_______ minutes.

Answer 17

15 min.

Question 18

True or False: The PBE does not protect against smoke.

Answer 18

False

Question 19

True or False: Only the Captain’s and First Officer’s seat positions have a
microphone built into the oxygen mask.

Answer 19

False

Question 20

True or False: If the passenger overhead oxygen compartment doors did not open
automatically during a pressurization failure, there is no way for the pilots to
manually deploy the masks.

Answer 20

False

Question 21

When the crew fixed oxygen system is charged enough for three crewmembers,
the oxygen pressure is displayed with which color?

Answer 21

green

Question 22

Which color is the oxygen pressure displayed in when there is only sufficient
supply for two crew members?

Answer 22

cyan

Question 23

Once activated, each chemical generator can provide approximately _______
minutes of oxygen.

Answer 23

12 min.

Question 24

The NORMAL position on the crew oxygen mask accomplishes what?

Answer 24

The oxygen to air ratio is dependent on cabin altitude

Question 25

Which selection on the oxygen mask supplies oxygen under pressure to remove
smoke or fumes from the mask?

Answer 25

emergency