11.15 Oxygen

Question 1

What does air consist of?

Answer 1

. 78% nitrogen
. 21% oxygen
. 1% inhert gases

Question 2

As altitude increase what happens to air pressure and density?

Answer 2

As altitude increases, air pressure decreases and so does density of air

Question 3

At 10000ft Humans can compensate for lack of oxygen by?

Answer 3

Breathing faster

Question 4

What feet would you start feeling effects of altitude?

Answer 4

14000ft start feeling ill

Question 5

What feet would you be completely compensated for altitude sickness?

Answer 5

15000ft

Question 6

What are the three types of oxygen?

Answer 6

. Aviators
. Medical oxygen
. Technical oxygen

Question 7

Out of the three types of oxygen which type can be used in aircraft?

Answer 7

Aviators as it is dry

Question 8

What does medical oxygen contain that makes it unable to be used in aircraft?

Answer 8

Water so may freeze

Question 9

What does technical oxygen contain that makes it unable to be used in aircraft?

Answer 9

Contaminated

Question 10

What should you ensure when working with oxygen systems?

Answer 10

Wash your hands,
Be free of oil

Question 11

Who does the crew oxygen system supply to?

Answer 11

Only cockpit crew, one or more bottles

Question 12

What colour is oxygen bottle?

Answer 12

Dark green

Question 13

Attached to each bottle is a what?

Answer 13

Pressure regulator
Feed o2 inti distribution components

Question 14

What is maximum capacity of 02 in a bottle?

Answer 14

3200 litres

Question 15

What pressure is 02 stored at?

Answer 15

1850 PSI

Question 16

If temperature or pressure of bottle gets too high what bursts, preventing major damage?

Answer 16

Green Safety disk at 2600 PSI

Question 17

If the bottle reads less than 50 PSI what should you do?

Answer 17

Must not be refilled as moisture may have entered cylinder
. Remove it and return it to workshop

Question 18

When refilling the bottle there is a danger or heat concentration, what helps prevent this?

Answer 18

Thermal compensator

Question 19

When 02 pressure is displayed on ECAM/ EICAS what are the two colours for sufficent and low pressure?

Answer 19

Green = good
Amber = low pressure

Question 20

In the cockpit how many oxygen masks are there?

Answer 20

4
2 for pilots
2 for observers

Question 21

What are the two functions of the mask storage box?

Answer 21

. Storage
. Press to rest and test

Question 22

How quickly can flight crew put their masks on?

Answer 22

With one hand in less than 5 seconds

Question 23

What must you do before repressurising 02 barrels?

Answer 23

Check temperature

Question 24

On flight crew mask what does the mask cover?

Answer 24

. Eyes
. Nose
. Mouth

Question 25

What are the three modes of the oxygen mask?

Answer 25

. Normal . 100% oxygen . Emergency

Question 26

At what altitude will passenger o2 systems activate automatically?

Answer 26

14000 feet

Question 27

There is an 02 mask for everyone, where else are the masks available?

Answer 27

Every seat, lavatories and every attendant station

Question 28

What precaution is in place because children may be sharing a seat with an adult?

Answer 28

At least one spare mask than there are seats in a row

Question 29

If automatic activation switch fails, what can you do?

Answer 29

The pilot manually activates it in the cockpit

Question 30

After passenger system has been activated, what must you do?

Answer 30

Rest it by pushing reset button in cockpit

Question 31

For maintenance purposes wha5 is in place to prevent the whole system activating?

Answer 31

Special tool for opening single stowage boxes

Question 32

After activation and deployment of system, what needs to happen?

Answer 32

Repacked away manually by hand

Question 33

What are the two ways oxygen can be supplied to the system?

Answer 33

. Chemical system . Gaseous system

Question 34

In a chemical oxygen generator, of the side of the canister changes colour, what does it mean?

Answer 34

Generator has been used and must be replaced

Question 35

In a gaseous system there is no oxygen flow until?

Answer 35

Until masks are pulled and at least one lanyard is tightened which pulls a pin to activate.

Question 36

What is the main drawback from gaseous oxygen system?

Answer 36

On large aircraft there is a t8me delay suppling oxygen to passengers who are located a long way from o2 bottles

Question 37

In a gaseous system where is the oxygen supplied from?

Answer 37

o2 bottles

Question 38

What is the intended use of portable oxygen systems?

Answer 38

Emergency and first aid

Question 39

Where is portable oxygen normally stored?

Answer 39

In cockpit and near exits in passenger compartment

Question 40

What are the two types of masks used with portable o2 cylinders?

Answer 40

. One is a full face mask . One is a continuous flow o2 mask (first aid)

Question 41

How is oxygen pressure indicated on a bottle?

Answer 41

By a direct reading gauge