Hydraulics

Question 1

Which of the following is not controlled by hydraulics?

Answer 1

Ailerons?

Question 2

What is the nominal pressure created by the engine-driven hydraulic pumps?

Answer 2

3,000 PSI

Question 3

What provides backup pressure for the #1 Hydraulic System?

Answer 3

Standby Pump

Question 4

What is controlled by the #1 Hydraulic System?

BARF PIE

Answer 4

• Brakes
• Anti-Skid
• Rudder,
• Flaps
• PTU,
• Inboard roll Spoilers
• Elevators

Question 5

Which of the following is controlled by the #2 Hydraulic System?

LOSER E

Answer 5

L - landing gear
O - outboard spoilers
S - steering
E - emerg parking brake
R - rudder

E - elevators

Question 6

A minimum quantity of _____% must be present in the #1 and #2 hydraulic systems for aircraft dispatch.
.

Answer 6

40%

Question 7

A minimum quantity of _____% must be present in the #3 hydraulic system for aircraft dispatch..

Answer 7

45%

Question 8

True or False: The #1 Hydraulic System can be powered by AC ground power with the engines off.

Answer 8

True

Question 9

Normal hydraulic pressure from the engine driven hydraulic pump is approximately what PSI?

Answer 9

3,000 PSI

Question 10

What does the Power Transfer Unit (PTU) do?

Answer 10

Uses #1 System pressure to power System #2

Question 11

True or False: Hydraulic system pressures and reservoir quantities are normally displayed in analog format at the bottom of the First Officer’s MFD.

Answer 11

True

Question 12

What electrical source does the standby hydraulic pump need to operate?.

Answer 12

115 AC Power

Question 13

True or False: The standby pump automatically activates when the #1 engine fails during flight.

Answer 13

True

Question 14

True or False: Pilots can manually turn on the standby hydraulic pump.

Answer 14

True

Question 15

True or False: Both main hydraulic systems contain fuel/oil heat exchangers in the associated fuel tank to help cool the hydraulic fluid.

Answer 15

True

Question 16

How many volts minimum are needed to run the DC motor pump for the #3 Hydraulic System?

Answer 16

24 V

Question 17

When running off of the DC motor pump, what does the #3 hydraulic system get pressurized at?

Answer 17

2,600 - 3250 PSI

Question 18

When does the # 3 HYD PUMP caution light illuminate?

Answer 18

System pressure falls below 900 PSI &/or DC Motor pump is operating longer than 60 seconds on the ground

Question 19

The Auxiliary Hydraulic System provides power for _____.

Answer 19

The emergency landing gear system

Question 20

Nose wheel steering is powered by which hydraulic system?

Answer 20

2 Hydraulic system

Question 21

1 Hydraulic

BARF PIE

Answer 21

B - brakes
A - anti-skis
R - rudder
F - flaps
P - PTU
I - inboard spoilers
E - elevator

Question 22

2 Hydraulic

LOSER E

Answer 22

L - landing gear
O - outboard spoilers
S - steering
E - emerg parking brake
R - rudder

E - elevators

Question 23

3 Hydraulic

Answer 23

Elevators

Question 24

Engine Accessory Gearbox

FOD P

Answer 24

F - fuel pump
O - oil pump
D - DC starter/generator
P - permanent magnetic alternator (PMA)

Question 25

Prop Reduction Gearbox

HAPP

Answer 25

H - hyd pump (main)
A - a/c generator
P - pitch control unit (PCU)
P - prop oil pump/prop overspeed governor

Question 26

A/C Bus

MAST

Answer 26

M - most de-ice/anti-ice components
A - aux fuel pumps
S - standby hyd pumps
T - TRUs