Hydraulics

Question 1

Hydraulic tank capacity/details?

Answer 1

*Single baffled tank
*Split in two internal sections (4L each)
*9.6L (2.54 Gal)
*Located in left gear fairing
*Unpressurised
*Sight guage for levels
*Full = 9.6L
*Normal Fill = 9.35L
*Refil = 8.5L (lower limit for flight)
*Has a clogging indicator to find clogging within a system

Question 2

Accumulators? Number, capacity etc

Answer 2

One per system, hold 0.2L

Question 3

ACW Pump details?

Answer 3

Blue pump
*3000psi
*7.95L/min
*Powered by ACW Bus 1, controlled by DC Emergency Bus

Green pump
*3000psi
*7.95L/min
*Powered by ACW Bus 2, controlled by DC Bus 2

Question 4

Pumps powered by?

Answer 4

ACW generators
ACW bus 1 for left (blue) system
ACW bus 2 for right (green) system

Question 5

Auxiliary pump details?

Answer 5

*Lower volume DC pump, located in the blue (left) system
*Will power system in event of ACW pump failure
*Provides 3000psi but at a third of the output (2.65L/min)
*Turns on automatically when blue system pressure drops below 1500psi
*Powered by DC Bus 2 or HOT MAIN BAT BUS
*Will stop 15 sec after prop brake engaged
*Following reqs to run:
*one or more engines running
*LDG gear down
*prop brake not selected/engaged
*DC BUS 2 powered
*Blue main pump pressure below 1500psi

Question 6

Blue system (left) runs?

Answer 6

*Nose wheel steering
*Flaps
*Spoilers
*Prop brake
And via an emergency accumulator:
*Parking brake
*Emergency brakes

Question 7

Green system (right) runs?

Answer 7

*Landing gear
*Normal brakes

Question 8

Low level light comes on when?

Answer 8

When either 4L compartment in the hydraulic tank gets below 2.5L
(will be a local alert, CAP alert and aural alert)

Question 9

On the ground, pushing the AUX PUMP button on the pedestal is used:

Answer 9

To energise the AUX PUMP (blue system), regardless of whether the battery is switched on or off