Flight Line Supplement

Question 1

What drives the #1 and #2 hydraulic pumps?

Answer 1

Transmission accessory gearbox

Question 2

What powers the back up bump?

Answer 2

An electric motor

Question 3

How much PSI of hydraulic pressure is supplied?

Answer 3

3000PSI

Question 4

What happens if a return hydraulic filter is clogged?

Answer 4

Fluid would be blocked in the return lines causing hydrostatic lock up

Question 5

What does the #1 hydraulic pump supply pressure too?

Answer 5

1 first stage fore, aft, lateral primary servos and the #1 T/R servo

Question 6

What does the #2 hydraulic pump supply pressure too?

Answer 6

2 second stage for, aft, lateral primary servo and the pilot assist

Question 7

What consists of the pilot assist module?

Answer 7

pitch, roll, yaw SAS actuators
pitch boost servo
collective and yaw boost servo
pitch trim assembly

Question 8

What does the back up pump supply pressure too?

Answer 8

1 and #2 hydraulic pumps

2nd stage T/R servo
APU accumulator