Hydraulics

Question 1

what does hydraulic system operate? (hint: 5 things)

Answer 1

• brakes
• landing gear
• spoiler / speed brakes
• stick pusher
• rudder spring actuator

Question 2

how does hydraulic pressure affect rudder boost?

Answer 2

it unlocks the springs for the assymetric assist - but isn’t involved in it directly other than to move a bar to release the springs (or recapture them)

Question 3

what is purpose of the priority valve?

Answer 3

prioritizes the rest of the system but not the gear (saves for brakes, spoiler / speed brakes, pusher and rudder booster)

*in case of multiple subsystem failures

Question 4

hydraulic system accumulator pre-charge check interval?

Answer 4

15 consecutive calendar days or before next flight, whichever occurs LAST