11.15 OXYGEN👌🏼

Question 1

What could happen to passengers if cabin pressure was lost

Answer 1

• passengers suffer from hypoxia
• insufficient oxygen

Question 2

What cabin pressure should be maintained when cruising

Answer 2

8000ft

Question 3

What colour are oxygen cylinders

Answer 3

Typically green

Question 4

Which oxygen type is used in aircraft and why

Answer 4

• Aviators oxygen
• as it is dry

Question 5

Why is medical oxygen never used on aircraft

Answer 5

• contains water droplets and therefore freezes

Question 6

Why is technical oxygen never used

Answer 6

• Contaminated therefore not suitable for breathing

Question 7

What flow systems are used for flight crew

Answer 7

• diluted demand
• constant pressure demand

Question 8

What pressure is supplied from the oxygen bottles

Answer 8

• 1850 psi

Question 9

Can we provide 1850 psi straight away to the occupants

Answer 9

No

Question 10

Where is the flight deck oxygen system located

Answer 10

• avionics or cargo compartment

Question 11

What are pressure regulators

Answer 11

• regulate pressure to make sure oxygen is not over pressurised or under pressurised

Question 12

When is the passenger oxygen system active

Answer 12

• when cabin is depressurised

Question 13

If the cabin is above ———-ft the passenger oxygen system is automatically activated

Answer 13

14000ft

Question 14

How do you ensure oxygen bottles stay serviceable

Answer 14

• periodically perform a hydrostatic test

Question 15

What is the function of the shut-off valve

Answer 15

Opens and closes the bottle

Question 16

If temp or pressure gets too high the safety disc bursts (T or F)

Answer 16

T

Question 17

When would you use a thermal compensator

Answer 17

• when re-filling and a danger of heat concentration
• distributes heat through brush like surface

Question 18

Where are the portable oxygen equipment stored

Answer 18

• Cockpit
• near exits and passenger compartment

Question 19

When would you use a portable oxygen system

Answer 19

Emergency or first-aid

Question 20

Explain a 2 step process for supply regulation

Answer 20

• high oxygen pressure system that is reduced to intermediate level. Then reduces even further to a usable pressure

Question 21

Explain a 1 step process for supply regulation

Answer 21

• high pressure system reduced directly to usable pressure

Question 22

Can flight deck deploy emergency continuous passenger oxygen masks (T or F)

Answer 22

T

Question 23

Can the passenger oxygen system be opened manually, and with what

Answer 23

Yes with a special tool

Question 24

2 ways oxygen is supplied to the system

Answer 24

• chemical system
• gaseous system

Question 25

Explain oxygen generator

Answer 25

• stored in overhead PSU
• 1 person pulls, the whole row activates
• generator filled with sodium chlorate
• provides oxygen until it burns out (up to 20 mins)
• requires replacement

Question 26

What is the flow control unit for

Answer 26

• reduce oxygen pressure to a usable level

Question 27

What is the flow control unit for

Answer 27

• reduce oxygen pressure to a usable level

Question 28

What is the use for the transparent bag on the mask

Answer 28

• to recirculate oxygen

Question 29

If oxygen cylinder is subjected to high temperature and pressure, what feature is used to protect aircraft and components.

• thermal compensator
• thermal discharged disc
• both

Answer 29

• thermal discharged disc

Question 30

Which component should be installed when charging oxygen cylinders
- Thermal discharged disc
- Thermal compensator
- Both

Answer 30

• Thermal compensator

Question 31

Where are the oxygen generators stored

Answer 31

• Passenger service unit (PSU)