Hawker 800 XP, Pilot Training Manual

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13-6
FOR TRAINING PURPOSES ONLY
HAWKER 800 XP PILOT TRAINING MANUAL
FlightSafety
international
AUXILIARY HYDRAULIC
SYSTEM
GENERAL
The auxiliary hydraulic system is pressurized by
the hand pump located on the floor, at the right
side of the pilot. The removable pump handle,
stowed on the front of the copilot’s seat base, can
also be used as the rudder gust lock. MIL-H-
5606C fluid is supplied by a separate 6 U.S.
pint tank in the nose gear bay (Figure 13-6).
Fluid level is observed in the transparent sight
gage. A float switch in the tank is connected
to the amber AUX HYD LO LEVEL annun-
ciator. If fluid level is reduced by one-half
pint or more, the annunciator will illuminate.
The auxiliary hydraulic system provides an al-
ternative source of hydraulic power for land-
ing gear lowering and flaps operation.
The system is hand-operated, and when se-
lected, is independent of the main system.
Emergency lowering of the landing gear is
available regardless of the setting of the land-
ing gear selector lever but the flaps must be
selected to the required setting.
When using the auxiliary system, lowering
the landing gear always occurs before opera-
tion of the flaps. The system cannot be used
to raise the landing gear.
A full reservoir provides sufficient fluid for
at least one emergency lowering of the land-
ing gear followed by at least one extension of
the flaps to the landing position.
If the auxiliary system selection has
been made following a main system
failure, the auxiliary system must
not be reset in flight.
Ignoring this CAUTION could re-
sult with the landing gear collapsing.
CAUTION
Figure 13-6. Auxiliary Hydraulic Tank
Control Location
AUX HYD SYSTEM Left side of center instrument
PULL selector handle panel, adjacent to FMS No. 1
display.
EMERG HYD PUMP Left side of center instrument
operating handle socket panel, adjacent to FMS No. 1
display, beneath the AUX HYD
The rudder gust lock SYSTEM PULL selector handle.
serves as the handle.
AUX HYD LO LEVEL MWS main panel
Auxiliary reservoir Visible from nose gear bay.
contents level
indicator tube
AUX HYD
LO LEVEL
TABLE 13-2. Controls and Indications