Oxygen Flashcards

1
Q

Oxygen Requirements over 12,500

A

Minimum flight crew Must use oxygen after 30 mins

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2
Q

Oxygen requirements Above 14,000

A

Minimum flight crew is provided with and uses supplemental oxygen.

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3
Q

Oxygen requirements Above 15,000

A

Each occupant is provided with supplemental oxygen.

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4
Q

Oxygen requirements Above FL250

A

At least a 10 minute supply of supplemental oxygen for each occupant on board

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5
Q

Oxygen requirements above FL350

A

One Pilot must be using oxygen if the other leaves the control.

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6
Q

Oxygen requirements above FL410

A

Both pilots must use oxygen at the controls.

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7
Q

4 types of Aircraft oxygen system design.

A

-Chemical Oxygen
-Potable gaseous
-On-Board Oxygen generating system
-Liquid oxygen system

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8
Q

Chemical oxygen System

A

•used in large aircraft for 10 minute supply
•face mask that drops, chemical reaction with sodium chlorate

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9
Q

Portable Gaseous Oxygen System

A

•Provides oxygen for aircraft’s that lack an oxygen system or for passengers when pilots are using theirs
•consists of
-Container
-Regulator
-Mask outlet
-Pressure gauge

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10
Q

On-Board oxygen generating system (OBOGS)

A

•converts engine compressor bleed air to oxygen-rich breathing air and pressurized air for at the correct pressure and temperature
•provides a continuous supply of breathing air for crew while the engine is operating

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11
Q

Liquid Oxygen System

A

Liquid oxygen systems, or LOX, is used in some jet aircraft because LOX storage occupies less space and weigh less than those used for gaseous oxygen
(Similar to portable but uses liquid oxygen)

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12
Q

7 types of Supplemental Oxygen Delivery Systems

A

•Cannula
•Continuous-Flow Oxygen system
•Electrical Pulse Demand
•Continuous Flow
•Constant Flow
•Diluter Demand
•Pressure Demand

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13
Q

Cannula delivery system

A

•A cannula is an ergonomic piece of plastic tubing that runs under the nose and is often used to administer oxygen in non-pressurized aircraft
•Used up to 18,000 feet and are not authorized to use above.

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14
Q

Continuous-Flow oxygen Delivery System

A

•The passenger mask typically has a reservoir bag, which collects oxygen from the continuous-flow oxygen system when the mask user is exhaling

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15
Q

Electrical Pulse Demand oxygen delivery system

A

•delivers oxygen by detecting an individual’s inhalation effort and provide oxygen flow during the initial portion of inhalation
•can reduce the amount of oxygen needed by 50-85%
•incorporate an internal barometer that automatically compensates for changes in altitude by increasing the amount of oxygen delivered for each pulse as altitude is increased

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16
Q

Continuous Flow oxygen delivery system

A

•Usable up to 25,000
•Provides constant delivery

17
Q

Constant Flow Oxygen Delivery system

A

•Delivery’s constant flow of oxygen
•Adjustable Flow or Altitude-Compensated which utilizes barometric pressure to adjust oxygen flow per altitude
•oronasal mask that covers both nose and mouth

18
Q

Diluter Demand system

A

•Diluter-demand oxygen systems supply oxygen only when the user inhales through the mask
•An auto-mix lever allows the regulators to automatically mix cabin air and oxygen or supply 100% oxygen, depending on the altitude
•provides oxygen up to 40,000 feet.

19
Q

Pressure demand

A

•Pressure-demand regulators create airtight and oxygen-tight seals, but they also provide a positive pressure application of oxygen to the mask facepiece that allows the user’s lungs to pressurize with oxygen
•pressure-demand is used above 40,000ft

20
Q

Oxygen Preflight Checklist

A

“PRICE”
P-pressure
R-regulator
I-indicators
C-connections
E-Emergency

21
Q

Scuba Diving wait time below 8000msl

A

•12 hours for uncontrolled ascent
•24 hours for controlled ascent

22
Q

Scuba Diving wait time above 8000msl

A

Above 8000 should be 24 hours no matter the dive.

23
Q

Oxygen Face Masks

A

Cannula
Oral nasal rebreather
Quick-Don mask
Airline Drop down units

24
Q

Oral- Nasal Rebreather mask

A

Covers nose and mouth, when exhaling it fills bag up mixed with 100% oxygen and is safe up to 25,000

25
Q

Quick Don Mask

A

Must have capability to be donned with one hand in 5 seconds or less, capable up to 40,000ft

26
Q

Airline Drop Down units

A

Allows a mixture of cabin air and 100% oxygen and safe up to 40,000ft

27
Q

How much time do you have if you occur rapidly decompression?

A

30,000- 1-3mins
35,000- 30sec-1min
40,000- 15-20 seconds

28
Q

What are the three types of Decompression?

A

Explosive
Rapid
Gradual

29
Q

What is explosive Decompression?

A

Pressure changes in less than .5 seconds, faster then lungs can decompress, lung damage

30
Q

What is rapid decompression?

A

Complete pressurization loss occurs in less than 10 seconds.

31
Q

What is gradual decompression?

A

As cabin altitude increases your ability to detect decompression is impaired by hypoxia.

32
Q

What is Hypoxia?

A

A result of the bloods reduced ability to carry oxygen.

33
Q

What are the types of hypoxia?

A

Hypoxic
Hypemic
Histotoxic
Stagnant

34
Q

What is Hypoxic Hypoxia

A

Not enough oxygen for the lungs to efficiently transfer oxygen to the blood.

35
Q

What is hypemic hypoxia?

A

Reduced ability of the blood to carry oxygen, multiple reasons including carbon monoxide, hemoglobin bonds with it 200 times more rapidly than it does with oxygen.

36
Q

What is stagnant hypoxia?

A

This occurs when there is not enough blood flow to carry the oxygen around the body.
•May happen following a rapid decompression or in cold weather not using heat.

37
Q

What is Histotoxic Hypoxia?

A

The cells are unable to accept the oxygen, usually because of alcohol, medication, or drugs.