Hawker 800 XP, Pilot Training Manual

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Revision 1 7-20
FOR TRAINING PURPOSES ONLY
HAWKER 800 XP PILOT TRAINING MANUAL
FlightSafety
international
Electrical Power Supplies
DC supplies for the engine anti-icing system
are taken from busbar PE.
Aircraft Services
Each engine has two bleed ports used for air-
craft services:
• One low pressure (LP) bleed port on
the inboard side of each engine takes
bleed air aft of the last stage of the
axial compressor.
• A high pressure (HP) bleed port takes
air from downstream of the centrifu-
gal compressor.
Each bleed air system contains check valves that
prevent air from returning to the engines at low
engine speeds or during engine shutdown.
The aircraft uses LP bleed air for air condition-
ing, normal pressurization, emergency pressur-
ization and hydraulic reservoir pressurization.
HP bleed air supplements LP bleed air sup-
plying these services at low power settings.
The rudder bias system receives power from
the LP bleed air system only.
AUTOMATIC
PERFORMANCE
RESERVE (APR)
INTRODUCTION
The APR system, when armed, allows an au-
tomatic increase in engine performance in the
event of an engine failure or transient fault dur-
ing takeoff, or during a “go-around” follow-
ing a single-engined approach.
There will be no increase in thrust if the am-
bient conditions are such that the engines are
N1 rpm limited (at normal rating).
The APR system is powered from the PE bus-
bar and comprise, two mechanically latching,
“push on/push off,” control switches in the
flight compartment plus an APR/Synchronizer
control unit in the rear equipment bay.
CONTROLS
Two control switches, the LH one labeled APR
O / R I D E a n d t h e R H o n e A P R A R M a r e
mounted on the pilot’s center instrument panel
(see Figure 7-17).
The ARM switch has an APR ARM white an-
nunciator which will be lit when the switch is
pressed to arm the system and will not be lit
when the switch is pressed again to disarm
the system.
APR
APR O/RIDE
APR
ARMED
APR ARM
Figure 7-17. APR Controls