Hydraulics Flashcards
The hydraulic system consists of _____ completely independent systems.
two
Where is the Hydraulic System A sight glass?
In the Left landing gear pod aft of the landing gear.
What does Hydraulic System A have that helps cover peak fluid demands and dampen pressure transients?
A nitrogen charged accumulator.
Where can you view the A system accumulator pressure?
Sight glass in hydraulic compartment door.
Where does Hydraulic System A get its power?
AC power from AC BUS 1.
ac bus 2 if ac bus 1 fails
What does the Hydraulic System A power?
- Alternate Brakes.
- Outboard Ground Spoilers
- Normal Landing Gear Extension/Retraction.
Where is the Hydraulic System B sight glass?
In the Right landing gear pod, aft of the landing gear.
Where does Hydraulic System B get its power?
AC power from AC BUS 2.
ac bus 1 if ac bus 2 fails
What does the Hydraulic System B Power?
- Flaps
- Nose Wheel Steering
- Normal Brakes
- Emergency/Parking Brake
- Inboard Ground Spoilers
- Roll Spoilers
- Alternate Landing Gear Extension
What does the Hydraulic System B have that creates parking brake pressure prior to engine start and serves as a backup?
A DC-powered back-up standby pump.
When the Hydraulic System B Standby backup pump is set to AUTO, when does it come on.
It turns on anytime the B system pressure becomes low.
below 1958 psi
What powers the Hydraulic System B Standby backup pump?
DC ESS BUS when in CONTINUOUS MODE
DC BUS 1 in AUTO MODE
