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Flashcards in OXYGEN Deck (28)
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1
Q

What is the ISA temperature and air pressure?

A

Temp - 15 degrees C

Air - 1013.25 hector pascal

2
Q

In the event of a cabin depressurisation at 10,000 feet, what can humans do to help feed the brain of oxygen?

A

Breath at a faster rate.

3
Q

At what altitude will rapid decompression happen in 15 seconds?

A

40,000 feet.

4
Q

What is the most commonly used oxygen bottle in aviation?

A

Aviators oxygen.

Very dry source of oxygen.

5
Q

In a crew oxygen system, what will be attached in order to control the flow of oxygen delivered to the distribution components?

A

Pressure regulator

6
Q

In a crew oxygen system, what is the system called in which will allow the user to control the flow of oxygen delivered to the mask?

A

Diluter demand.

7
Q

How can we test an oxygen mask storage hold?

A

Press the lever and check if any oxygen flows via a dial.

When the lever is up ‘OXY ON’ will show.

Rest by pushing lever down.

8
Q

In an oxygen mask storage unit, what will allow the microphone to be used when the oxygen mask is attached in use?

A

A pressure switch connected to the supply valve.

9
Q

Which mode on an oxygen mask will allow the supply of 100% oxygen to the user?

A

100% oxygen on the diluter demand.

10
Q

Typically how long does it take for the application of an oxygen mask?

A

5 seconds.

11
Q

What altitude is the cabin pressurised to during flight?

A

8000 ft

12
Q

In the overhead section of passenger seating, how many mask will there be in number to the seats?

A

Always one more than the number of seats in the section if parents are holding children.

13
Q

When passenger masks drop, if the automatic system fails how can the pilot release the masks?

A

Manual override.

14
Q

How long will an activated oxygen generator generate oxygen for?

A

12 to 15 minutes.

15
Q

What are the two methods of supplying passenger oxygen?

A

Gaseous

Chemical

16
Q

In order to begin the supply of oxygen to the passenger masks, what must be done?

A

A lanyard is pulled to remove a pin which will begin the delivery of oxygen.

17
Q

What is oxygen usually stored in?

A

A dark green bottle

Made of steel alloy or Kevlar.

18
Q

At 21 degrees C, what is the max capacity of oxygen?

A

3200L

19
Q

How much pressure should an oxygen bottle typically have?

A

1850 PSI

20
Q

In the event of an oxygen bottle over pressure, what safety device will prevent explosion?

A

Safety disk in which will bust on overpressure at around 2600PSI

21
Q

What device will stop oxygen going into the storage area on re fill?

A

Safety outlet.

22
Q

How many bottles can be connected to the same discharge line?

A

10 bottles.

23
Q

On refilling oxygen systems, what pressure must you NOT refill?

A

Below 50 PSI on the gauge. Pressure below this can begin to contaminate.

24
Q

If on a thermal compensator the B-nut is disconnected, what must be done?

A

The whole unit must be replaced.

25
Q

Airbus and Boeing have different numbers of stages for pressure regulation. What are these?

A

Airbus 1 step.

Boeing 2 step. - intermediate to unusable pressure.

26
Q

What two locations can portable oxygen systems be stored in?

A

Cockpit or next to passenger exits.

27
Q

If a smoke hood storage box indicator reacts to humidity in the air and the colour changes what precautions should be taken?

A

The smoke hood must be replaced.

Smoke hoods are vacuum packed

28
Q

What is the purpose of a smoke hood?

A

To prevent the inhalation of fumes.