Oxygen

Question 1

What are the two independent oxygen systems in the aircraft?

Answer 1

One for the
flight deck and one for the cabin

Question 2

What is the purpose of portable oxygen bottles?

Answer 2

To allow the flight
attendants to move about the cabin during an emergency and unpressurized or as first aid

Question 3

Where is the flight crew’s supplemental oxygen stored?

Answer 3

In the wardrobe
behind an access panel. In a high pressure storage bottle 50 cubic feet.

Question 4

What is the pressure of a full oxygen storage bottle?

Answer 4

1850

Question 5

What happens if the bottle pressure drops below 1,410 psi?

Answer 5

an OXY LO
PRESS caution message will be displayed

Question 6

What is the function of the blowout disk?

Answer 6

it will pop out in the event that
the oxygen bottle over pressurizes due to large changes in ambient
temperature.

Question 7

Where is the blow out disk located

Answer 7

left fuselage by pax door

Question 8

What color is the bblow ouut disc

Answer 8

Green

Question 9

What does it mean if the blowout disk is missing?

Answer 9

It means that all of the
oxygen in the crew bottle has been dumped overboard

Question 10

8. Where can the crew oxygen bottle be serviced?

Answer 10

A panel located on the
right forward fuselage just aft of the radar.

Question 11

What components are included in the service panel for the crew oxygen
bottle?

Answer 11

A filler valve and an electrical pressure gauge

Question 12

10.How is supplemental oxygen delivered to the flight crew?

Answer 12

Through 3 quick
donning oxygen masks. have a mic in it and inflatable harness

Question 13

What features do the flight crew oxygen masks have?

Answer 13

full face masks with
an inflatable harness and an internal microphone

Question 14

12.What do the flow blinkers indicate?

Answer 14

Display a yellow cross anytime
oxygen is flowing through the mask or when the harness is inflated. Press to test button

Question 15

13.How can the oxygen mask be removed from its container?

Answer 15

by grasping the red
release levers that protrude through the container doors

Question 16

14.What happens when the release levers are grasped?

Answer 16

Opens the harness
inflation valve, which causes the harness to expand

Question 17

15.What does the PRESS TO TEST AND RESET lever do?

Answer 17

allows flow to the
mask to be tested without removing the mask from the container

Question 18

16.What does the N/100% lever control?

Answer 18

Controls the mixture of oxygen and
ambient air that is supplied to the user

Question 19

17.What happens when the N/100% lever is in the N position?

Answer 19

provides the
appropriate mixture of pressurized oxygen and ambient air for the cabin
altitude

Question 20

18.What happens when the N/100% lever is in the 100% position?

Answer 20

provides
pure oxygen on demand

Question 21

19.What is the function of the emergency flow control knob?

Answer 21

To supply 100%
continuous oxygen under positive pressure to the mask wearer and to
purge the mask

Question 22

20.How is oxygen supplied to passengers?

Answer 22

Via chemical oxygen generators

Question 23

Cabin oxygen installed where

Answer 23

cabin overhead

Question 24

21.What triggers the chemical oxygen generators?

Answer 24

When one of the masks
in a passenger service unit is pulled down, a pin in the oxygen generator
is released and the chemical reaction is started

Question 25

22.How long do passenger oxygen generators supply oxygen?

Answer 25

13 minutes. Some aircraft 22 minutes

Question 26

23.How many masks are installed in each passenger service unit?

Answer 26

Right side of the aircraft: 3 masks. Left side of the aircraft: 2 masks

Question 27

24.Where else are passenger service units installed?

Answer 27

Above the flight attendant station and the lavatory

Question 28

25.What type of masks are used for passengers?

Answer 28

Plastic cup type masks attached to a reservoir bag. Held in place with plastic head straps

Question 29

27.How is the passenger oxygen system activated automatically?

Answer 29

Cabin altitude of 14,000 plus or minus 300

Question 30

27.How is the passenger oxygen system activated manually?

Answer 30

PAS OXY button

Question 31

29.What indicates that passenger masks have been deployed?

Answer 31

The PASS OXY switch light on the flight deck overhead panel will be illuminated

Question 32

31.Why is the PASS OXY switchlight guarded?

Answer 32

Because the masks will deploy at any altitude if the switch light is depressed

Question 33

32.What message is displayed on the EICAS when the passenger system is activated?

Answer 33

An amber PASS OXY ON caution message ED 1

Question 34

33.How can a passenger service unit be manually opened?

Answer 34

By inserting a pin or small rod into the latch release slot of the unit

Question 35

34.What is the purpose of manually opening a passenger service unit?

Answer 35

in the event that a unit does not respond to electrical signals from the flight deck