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Flashcards in Oxygen System Deck (16)
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1
Q

How many oxygen systems are there?

A
  1. One for flight crew and one for passengers.
2
Q

Where are the portable oxygen cylinders normally found?

A

forward and aft areas of the passenger cabin

3
Q

How high may crew oxygen pressure read on the guage?

A

As high as 1850 psi

4
Q

What does the NORMAL position mean for the PASS OXYGEN system?

A

masks will drop and passenger oxygen system is activated automatically if cabin altitude climbs to 14,000 feet.

5
Q

What does the PASS OXY ON light mean?

A

passenger oxygen system is operating AND the masks have dropped.

6
Q

Where are there masks located?

A

All passenger seats, FA seats and lavatories. Masks and regulators for all flight deck positions.

7
Q

How many crew oxygen cylinders are there and where are they found?

A

Just 1 cylinder. Found underneath the flight deck area. Flow is controlled from high pressure to low pressure via a regulator.

8
Q

Where does pressure breathing occur?

A

above 27,000 feet with pressure breathing mask on.

9
Q

Where is the regulator for the oxygen mask?

A

On the mask. Options are Normal or 100%

10
Q

How do you don the mask?

A

Grasp regulator with thumb and forefinger and remove. Squeeze red levers together.

11
Q

What happens when you squeeze the inflation levers for the O2 mask?

A

inflates the mask harness and displays colored oxygen flow indicator.

12
Q

How is passenger oxygen supplied.

A

Via chemical oxygen generators located at each passenger service unit (PSU).

13
Q

How are the chemical oxygen generators activated?

A

By pulling any mask in the unit down. Then all four masks have oxygen flowing.

14
Q

How do you know oxygen is flowing? How long does it flow for?

A

A green indicator is located just above the bag and shows green when oxygen is flowing. Approximately 12 minutes. Once started it cannot be shut down.

15
Q

Can you manually open the compartment for the masks to drop?

A

Yes, open with a small object

16
Q

Portable oxygen cylinders have two continuous flow settings. What are they?

A

One regulates flow @ 2L/minute for walk around. The other is a 4L/minute for first aid.