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M11 > 11.15 OXYGEN👌🏼 > Flashcards

11.15 OXYGEN👌🏼 Flashcards

1
Q

What could happen to passengers if cabin pressure was lost

A
  • passengers suffer from hypoxia
  • insufficient oxygen
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2
Q

What cabin pressure should be maintained when cruising

A

8000ft

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3
Q

What colour are oxygen cylinders

A

Typically green

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4
Q

Which oxygen type is used in aircraft and why

A
  • Aviators oxygen
  • as it is dry
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5
Q

Why is medical oxygen never used on aircraft

A
  • contains water droplets and therefore freezes
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6
Q

Why is technical oxygen never used

A
  • Contaminated therefore not suitable for breathing
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7
Q

What flow systems are used for flight crew

A
  • diluted demand
  • constant pressure demand
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8
Q

What pressure is supplied from the oxygen bottles

A
  • 1850 psi
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9
Q

Can we provide 1850 psi straight away to the occupants

A

No

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10
Q

Where is the flight deck oxygen system located

A
  • avionics or cargo compartment
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11
Q

What are pressure regulators

A
  • regulate pressure to make sure oxygen is not over pressurised or under pressurised
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12
Q

When is the passenger oxygen system active

A
  • when cabin is depressurised
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13
Q

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

A

14000ft

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14
Q

How do you ensure oxygen bottles stay serviceable

A
  • periodically perform a hydrostatic test
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15
Q

What is the function of the shut-off valve

A

Opens and closes the bottle

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16
Q

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

A

T

17
Q

When would you use a thermal compensator

A
  • when re-filling and a danger of heat concentration
  • distributes heat through brush like surface
18
Q

Where are the portable oxygen equipment stored

A
  • Cockpit
  • near exits and passenger compartment
19
Q

When would you use a portable oxygen system

A

Emergency or first-aid

20
Q

Explain a 2 step process for supply regulation

A
  • high oxygen pressure system that is reduced to intermediate level. Then reduces even further to a usable pressure
21
Q

Explain a 1 step process for supply regulation

A
  • high pressure system reduced directly to usable pressure
22
Q

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

A

T

23
Q

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

A

Yes with a special tool

24
Q

2 ways oxygen is supplied to the system

A
  • chemical system
  • gaseous system
25
Q

Explain oxygen generator

A
  • 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
26
Q

What is the flow control unit for

A
  • reduce oxygen pressure to a usable level
27
Q

What is the flow control unit for

A
  • reduce oxygen pressure to a usable level
28
Q

What is the use for the transparent bag on the mask

A
  • to recirculate oxygen
29
Q

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
A
  • thermal discharged disc
30
Q

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

A
  • Thermal compensator
31
Q

Where are the oxygen generators stored

A
  • Passenger service unit (PSU)

M11 (17 decks)

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