Oxygen

Question 1

Which statement is true concerning the Oxygen System on the E190 aircraft?

Answer 1

Protective breathing equipment (PBE) is for emergency use only

Question 2

Where is the Flight Crew Oxygen System bottle located?

Answer 2

In the forward cargo compartment

Question 3

What occurs in the event of an over-pressure of the Flight Crew Oxygen Bottle?

Answer 3

A green discharge indicator disc located on the right forward fuselage skin blows out

Question 4

What type of oxygen masks are provided for the Flight Crew?

Answer 4

Full face, quick donning oxygen masks

Question 5

How does a Flight Crew oxygen mask regulator function with the supply control knob in NORM?

Answer 5

Supplies oxygen diluted with cabin air on demand based on cabin pressure altitude

Question 6

What is one important function of the EMER position of the Flight Crew oxygen regulator supply control knob?

Answer 6

To provide 100% oxygen under positive pressure to purge smoke and fumes from the mask

Question 7

How long will the Protective Breathing Equipment (PBE) oxygen supply last?

Answer 7

At least 15 minutes at altitudes up to 40,000 Ft

Question 8

How is oxygen provided for the Cabin Oxygen System?

Answer 8

Individual chemical oxygen generators located in each Passenger Service Unit (PSU), Flight Attendant
Station, galley areas, and lavatories

Question 9

How long is oxygen provided to the passenger oxygen masks once oxygen begins to flow?

Answer 9

Approximately 12 minutes

Question 10

What is important to remember concerning the masks in the Cabin Oxygen System?

Answer 10

The masks do not provide smoke protection and once they begin supplying oxygen, they cannot be shut off

Question 11

How is oxygen flow provided to the passenger oxygen masks after mask deployment?

Answer 11

Oxygen flow begins to all masks connected to a dispensing unit whenever any mask from the dispensing
unit is pulled downward

Question 12

What does an illuminated ON light in the MASK DEPLOYED indicator mean?

Answer 12

That a signal has been sent to the passenger cabin to open the oxygen mask doors

Question 13

What does the OFF position of the MASKS DEPLOY selector knob do?

Answer 13

Disables automatic deployment of the passenger oxygen masks

Question 14

What is the purpose of the Purge Valve on the Flight Crew oxygen mask?

Answer 14

Allows oxygen flow into the face seal, purging any smoke and fumes

Question 15

The Flight Crew sees a cyan colored 1000 in the MFD Status Page under OXY PRESS PSI. What does this mean?

Answer 15

Advisory that the oxygen system pressure is sufficient for 2 crewmembers in the flight deck

Question 16

What do amber dashed lines indicate below OXY PRESS PSI in the MFD Status Page mean?

Answer 16

Invalid information or a value out of the valid operating range (no dispatch)

Question 17

What would be the correct Flightdeck Oxygen Pressure indication in the MFD Status page under OXY PRESS PSI
to tell the flight crew the Oxygen System is in the normal operating range (minimum for 3 crewmembers in the flight deck)?

Answer 17

Green colored digits

Question 18

What is the normal position of the Oxygen Supply Control Knob on each Flight Crew member’s oxygen regulator?

Answer 18

100%

Question 19

During the O2 & Interphone check on the Captain’s and First Officer’s Flight Deck Preparation Flow the Regulator
Control Knob is set to 100% and the TEST/RESET button is pressed and held. What’s the significance of ensuring
the Oxygen Flow Indicator shows a short illumination (or blink) and then goes OUT once the mask fully
pressurizes?

Answer 19

This ensures that the system is leak free

Question 20

The oxygen system parameters and indications are displayed on ____ page(s)

Answer 20

Both MFD Status Synoptic pages

Question 21

Pressing the TEST/RESET button with the crew oxygen mask stowed

Answer 21

Tests the oxygen mask and activates the microphone and speaker

Question 22

When the passenger mask doors are automatically or manually activated

Answer 22

Both A & C (An ON light illuminates on the PASSENGER OXYGEN panel, The FSTN BELTS and NO
ELEC DEVICES signs automatically turn on)

Question 23

The portable oxygen cylinders are for the use of flight attendants

Answer 23

To assist passengers in case of sudden decompression OR first aid purposes