Hydraulics

Question 1

What are the three independent systems?

Answer 1

Left, Right, and Center

Question 2

What does the LEFT system power?

Answer 2

1. Left Thrust Reverser
2. Flight Control Components

Question 3

What does the RIGHT system power?

Answer 3

1. Right Thrust Reverser
2. Flight Control Components
3. Normal Brakes

Question 4

What does the CENTER system power?

Answer 4

1. Flight Controls
2. Leading Edge Slats
3. Trailing Edges Flaps
4. Landing Gear Actuation
5. Nose Gear Steering
6. Main Gear Steering
7. Alternate Brakes

Question 5

What does the Ram Air Turbine power?

Answer 5

Backup pressure for primary flight controls only

Question 6

How are the C1 and C2 primary pumps driven?

Answer 6

Electric motor-driven

Question 7

How are the C1 and C2 demand pumps driven?

Answer 7

Air driven

Question 8

When are Primary Pump FAULT lights illuminated?

Answer 8

1. Low primary pump pressure
2. Excessive primary pump fluid temperature
3. Pump selected OFF

Question 9

When are the Demand Pump FAULT lights illuminated?

Answer 9

1. Low demand pump output pressure
2. Excessive demand pump fluid temperature
3. Demand pump is selected OFF

Question 10

When is the C2 primary pump NOT load shed?

(On the ground)

Answer 10

1. One engine generator is operating
2. Primary external power and secondary external power
3. APU generator and primary external power

Question 11

The C2 primary pump may be load shed by the ELMS when the following conditions exist:

(In flight)

Answer 11

1. All other electrical pumps are running
2. There is a single source of electrical power
3. Generator capacity is exceeded

Note: The pump starts automatically when the conditions that shed the pump no longer exist.