Hydraulic System

Supplies hydro at 4,000 PSI

4 main independent systems

AUX hydro power is supplied by an AC motor pump

Hydro 2 & 3 share a XFR Pump

Hydro 4 has a RAM AIR TURBINE (RAT) for emergency hydraulic power

Hydro 1 powers the FCS and engine exhaust system

Hydro 2 powers the FCS, fuel system, landing gear, cargo handling and mission systems, OBIGGS, doors system, and engine exhaust system.

Hydro 3 powers the FCS, fuel system, landing gear system, cargo handling and mission system, OBIGGS, doors system, and engine exhaust

Hydro 4 powers FCS and engine exhaust

Each primary surface receives hydraulic power from two different systems. Loss of one system only slows the deflection

Hydro 1-Thrust reverser engine 1, spoilers L-2/L-4, LH aileron, upper rudder, RH INBD elevator, RH OUTBD elevator, INBD FLAPS, OUTBD FLAPS, HORIZ STAB TRIM

Hydro 2-THRUST REVERSER ENGINE 2, SPOILERS L-3/R-1, LH AILERON, LOWER RUDDER, LH OUTBD ELEVATOR, RH OUTBD ELEVATOR, SLATS, L FUEL VENT OVERRIDE, BRAKES ANTISKID, LS NOSE WHEEL STEERING, L AIR DEFLECTOR, CARGO/ADS MAN, STAB STRUTS

Hydro 3-TR ENGINE 3, SPOILERS L-1/R-3, RH AILERON, UPPER RUDDER, RH INBD ELEVATOR, LH INBD ELEVATOR, SLATS, R FUEL VENT OVERRIDE, BRAKES ANTISKID, RS NOSE WHEEL STEERING, R AIR DEFLECTOR, CARGO WINCH, UARRSI

Hydro 4- TR ENGINE 4, SPOILERS R-2/R-4, RH AILERON, LOWER RUDDER, LH INBD ELEVATOR, LH OUTBD ELEVATOR, INBD FLAPS, OUTBD FLAPS, HORIZ STAB TRIM