Portable Oxygen Bottle (POB)

Question 0

(A319/321) what is the preflight check

Answer 0

• The pressure gauge must read between 1500-2000 PSI.
• one mask must be attached to the HI flow side and one additional mask present
• both masks must be sealed

Question 1

Locate/define the POB and it’s use

Answer 1

The portable oxygen bottle is used by the crew during and/or following a depressurization. Or for first aid

Question 2

(A319/321) what is the flow rate in liters per minute and the flow duration for each outlet if the POB

Answer 2

• 2 liters per min; for 120 mins on LO side

- 4 liters per min; for 66 mins on HI side

Question 3

(A319/321) what steps must be taken before activating the POB

Answer 3

• check O2 gauge for quantity

- ensure mask is attached to the appropriate outlet for the situation at hand

Question 4

Attach the mask to the alt flow valve outlet

Answer 4

Switch mask to alt flow valve

Question 5

(A319/321) what are the HI and LO outlets used for

Answer 5

• HI is used for decompression or first aid

- LO is used for infants, asthmatics or emphysema

Question 6

How do you prepare the PAX for POB use

Answer 6

Remove oil and makeup from the PAX face

Question 7

(A319/321) how do you activate the POB

Answer 7

• turn the valve counter-clockwise to the full open position

- then turn the valve back 1/4 turn

Question 8

How do you check for o2 flow

Answer 8

• Squeeze the reservoir bag just below the mask and check for inflation
• check for odor and color

Question 9

How would you secure the POB when in use

Answer 9

• secure under the PAX seat with a seat belt extension

- engage gauge faces aisle

Question 10

How often do you check the POB when in use

Answer 10

Every 10 mins

Question 11

What should the POB never fall below

Answer 11

500 PSI. this ensures enough pressure remains in the event of a depressurization

Question 12

What steps are taken when the POB is no longer needed or when pressure falls below 500 PSI

Answer 12

• turn the valve clockwise to the off position
• return the POB to its bracket and leave the used mask attached to the unit
• administer additional o2 from another POB If needed

Question 13

(A320) What is the preflight check

Answer 13

• the pressure gauge must read between 1500-2000 PSI
• one mask attached to the outlet and one additional mask must be present
• all masks must be sealed

Question 14

Remove mask from outlet and place back

Answer 14

Remove mask from outlet and connect back into same outlet

Question 15

(A320) How do you operate POB

Answer 15

• check o2 gauge for quantity
• gently rotate the cable and turn it counter-clockwise until the desired flow rate displays in the window (marked 2 or 4)
• the A320 POB only has one mask outlet
• the desired flow rage is controlled by the vakve

Question 16

(A320) what are the flow rates and indications

Answer 16

• a flow rate of 2 delivers 2 liters per min. LO 120 mins

- a flow rate of 4 delivers 4 liters per min. HI 66 mins

Question 17

(A320) how do you turn off the POB

Answer 17

• gently rotate the valve clockwise to the off position

- a red indicator will display in the flow indication window