Hydraulics

Question 1

How many Hydraulic Systems are there?

Answer 1

3

Question 2

How many pumps does each Hydraulic System have?

Answer 2

2

Question 3

What powers the Hydraulic Pumps in each system?

Answer 3

System 1 and 2 each have 1x engine driven pump, the backup pumps for system 1 and 2 along with the primary AND backup pump of system 3 are all AC powered.

Question 4

The hydraulic shut off valves are powered by the ___ .

Answer 4

DC Emergency Bus

Question 5

Hydraulic system 3 powers the nose gear steering system. True/False?

Answer 5

True

Question 6

The ACMPs are controlled by switches on the overhead hydraulic control panel. True/False?

Answer 6

True

Question 7

An electric fan drawing air from the Ram Air Inlet will help in cooling the fluid in hydraulic systems 1 and 2 when the aircraft is on the ground. True/False?

Answer 7

True

Question 8

What are the hydraulic accumulators charged with?

Answer 8

Nitrogen

Question 9

HYD EDP 1A Amber EICAS message indicates that the output of the #1 hydraulic pump is less than 1800 PSI. True/False?

Answer 9

True

Question 10

ACMP 1B is powered by AC BUS 2. True/False?

Answer 10

True

Question 11

The hydraulic fluid temperature on the Hydraulic Synoptic page is green when the hydraulic fluid temperature is less than ___ degrees C?

Answer 11

96 degrees C

Question 12

Normal hydraulic system pressure is ___ PSI.

Answer 12

3000 PSI

Question 13

EICAS HYD 2 LOW PRESS Amber Caution message means that hydraulic system 2 pressure is below ___ PSI.

Answer 13

1800 PSI

Question 14

Normal hydraulic quantity is ____ .

Answer 14

45-85%