What seven things are powered by the hydraulic system?
FC , F , S , N+M g S , LG , B , R
Flight Controls
Flaps
Slats
Nose and main gear steering
Landing Gear
Breaks
Reversers
How name systems area there? How many do you need to have aircraft control?
Three- Left, Center, Right
One
Which hydraulic system does the RAT support?
The Center system
When will the RAT automatically deploy?
-Both engines have failed and Center Hydraulic system pressure is low
-or-
-Both A/C transfer busses are unpowered
-or-
-All three hydraulic system pressures are low
What specific item on the center hydraulic system does the RAT power?
The left and right aileron, the Right Flaperon, right Elevator and the Rudder
When does the right demand pump operate continuously?
When the airplane is on the ground
When doe the left and right demand pump operate continuously?
When auto is selected they run continuously during takeoff and landing
When would both center defend pumps operate if they were in the AUTO position?
In anticipation of gear retraction
Would both center defend pumps operate if they were in the ON position?
No, when manually selected “ON” only one pump will run due to system logic
If low quantity is sensed in the center hydraulic system what does the system do?
It closes to isolation valves and isolated flow to the alternate reserve breaking
When the center hydraulic reservoir shows 0.0 is there any fluid left? What can it be used for?
-Yes
-There is some left that is accessible to the C1 pump standpipe and can be used for Alternate/Reserve breaking
When the center hydraulic reservoir is low but not zero what additional uses might be possible after landing?
It may be able to support nose gear steering as you slow through 60 knots
