Anti-Skid Brakes
Inboard Roll Spoilers
Ruder Lower PCU
Elevators Outboard PCU
PTU
Systems associated with Hydraulic System 2 - Correct Answer LONERE
Landing Gear
Outboard Spoilers
Nose Wheel Steering
Emergency (Parking Brake)
Rudder upper PCU
Elevator centre PCU
What causes a firewall shutoff valve to close? - Correct Answer Hydraulic Fluid too Hot
Hydraulic Quantity drops below 3%
T-Handle is pulled
What causes hydraulic isolation valve to close? - Correct Answer Hydraulic fluid quantity drops below
25%
Valve will isolated most likely leak sources.
What systems do you lose if #1 isolation valve closes? - Correct Answer Brakes and Inboard Roll Spoilers
, What systems do you lose when the #2 isolation valve closes? - Correct Answer Your lose everything
except associated Rudder and Elevator PCUs
When does the Priority Valve close? - Correct Answer When system pressure drops below 2000 psi
Ex. When extending flaps.
What is the APU fuel burn? - Correct Answer 84-202 lbs/h
80lbs/h at idle
120 lbs/h with GEN only
200lbs/h with Bleed ON
What considerations must be taken before starting the APU? - Correct Answer Fuelling is not underway
Battery Master and All batteries are ON. (Batteries maybe selected off after start but Battery must
remain on for fire protection)
Min 1000lbs fuel in left wing tank.
What voltage and amperage is the APU Generator - Correct Answer 28 V DC 400A Generator
What PSI does the APU bleed put out? - Correct Answer 80 PSI
What PSI do the engine bleeds put out? - Correct Answer 40 PSI
What is the quantity of the #1 Hydraulic System reservoir? - Correct Answer 8 U.S qrts
What is the quantity of the #2 hydraulic system reservoir? - Correct Answer 12 U.S qrts
What are the Min hydraulic quantities for dispatch? - Correct Answer #1 - 40%
#2 - 40%