Oxygen System

Question 1

1. The cockpit oxygen pressure gauge reads:

Answer 1

C. Bottle pressure

Question 2

2. Passenger masks are dropped when:

Answer 2

D. Both A and C

A. The OXYGEN CONTROL VALVE knob is in the NORMAL position and cabin altitude exceeds 14,500 feet

C. The OXYGEN CONTROL VALVE knob is in the MANUAL DROP position, regardless of altitude

Question 3

3. If DC power fails, placing the OXYGEN CONTROL VALVE knob in:

Answer 3

A. MANUAL DROP deploys the passenger masks, regardless of cabin altitude.

Question 4

4. The purpose of the altitude pressure switch is to:

Answer 4

B. Open a solenoid at 14,500 feet cabin altitude, allowing oxygen flow to the passenger oxygen distribution system.

Question 5

5. If the OXYGEN CONTROL VALVE knob is in the CREW ONLY position:

Answer 5

A. The passenger masks cannot be dropped automatically.

Question 6

6. If normal DC power is lost with the OXYGEN CONTROL VALVE knob in the NORMAL position:

Answer 6

D. Automatic dropping of the passenger masks does not occur.