Captains Guide- Hydraulics

Question 0

Items on #2 Hydraulic System?

Answer 0

LOSER
Landing Gear
Outboard Spoilers
Steering
Emergency/P-brake
Rudder #2 (Upper)

Question 1

Items on #1 Hydraulic System?

Answer 1

FARPIN
Flaps
Anti-Skid
Rudder #1 (Lower)
PTU
Inboard Spoilers
Normal Brakes

Question 2

Why is the #2 Standby Hyd Pump in the tail?

Answer 2

2 standby hyd pump is in the tail for used by the ARPS system.

Question 3

Why and how does the #2 Standby pump function automatically?

Answer 3

The #2 standby hyd pump functions automatically after sensing pressure loss in the #2 hyd system. The RSOV (an 18psi consumer) will shut the ARPS system off from the rest of the system so that the rudder is still powered.

Question 4

Minimum #1 Hyd System Fluid Quantity?

Answer 4

1.5 qts for dispatch

Question 5

2 Minimum fluid quantity

Answer 5

3.0 quarts

Question 6

What is the PTU’s function?

Answer 6

The PTU uses number #1 pressure and #2 fluid to raise the gear in the event of a #2 engine failure.

Question 7

When does the PTU operate?

Answer 7

The PTU operates automatically when the gear is selected up and there is a pressure loss in the #2 system. It can be activated by a switch on the panel.