Hydraulic

Question 1

General Hydraulics Description

Answer 1

• (3) Independent 3000 PSI Skydrol based Systems (#1, #3, #2) with (2) pumps: Pump (A) for normal power & Pump (B) as a backup.
• System 1&2 are powered by an engine driven pump (EDP) & an AC motor pump (ACMP)
• System 3, largest, 2 ACMPs & (RAT) when deployed.

Question 2

System 1 Provides hydraulic pressure to…

Answer 2

• Hydraulic pressure to the left side primary flight controls and rudder.
• L/R multifunction spoilers #1 & #4.
• L/R ground spoilers.
• Left thrust reverser.

Question 3

System 2 provides hydraulic pressure to…

Answer 3

• Right side primary flight controls and rudder.
• L/R multifunction spoilers #2 & #3.
• Main gear assist (L/R main landing gear extension/retraction)
• Right thrust reverser.
• Outboard brakes.

Question 4

System 3 provides hydraulic pressure to…

Answer 4

• All primary flight controls.
• L/R inboard ground spoilers.
• Landing gear and doors.
• Inboard & park/emergency brakes.
• Nosewheel steering.