HAWKER 800 XP
PILOT TRAINING MANUAL
FlightSafety
international
Revision 1
2-25
FOR TRAINING PURPOSES ONLY
Both the No. 1 inverter and the No. 2 inverter
must be started (INV 1 FAIL and INV 2 FAIL
annunciators out) and the standby inverter se-
lected to ARM before takeoff and left in this
condition throughout the flight.
ELECTRICAL POWER
SOURCES
PE bus bar
• Standby inverter
• Left SCREEN HEAT ON/OFF
PS1
bus bar
No. 1 inverter
PS2
bus bar
No. 2 inverter
XE
line
No. 1 26 VAC transformer
XS1
line
No. 2 26 VAC transformer
EMERGENCY BATTERY
SUPPLY
No. 3 battery (following a double generator
failure) will be automatically applied to the
standby horizon to maintain the attitude dis-
play and internal lighting on the standby hori-
zon. The E BAT ON annunciator on the bottom
half of the standby horizon switchlight cap-
sule will illuminate and an aural warning will
sound. The aural warning may be canceled by
depressing the horizon warn cancel pushbut-
ton adjacent to the standby horizon.
In addition to the above, the standby altime-
ter and airspeed indicators will have their in-
ternal lighting provided by the No. 3 battery,
and the No. 1 N
1
indicator will be powered by
the No. 4 battery.
No. 4 battery will provide time limited backup
power to the No. 1 AHRS in flight only in the
event of a total power failure of the normal air-
craft power system.
Radio Emergency Functions
The Radio Emergency System is activated by
raising the red RADIO EMERG switch (lo-
cated at the top of the DA panel behind the co-
pilot) to the ON position. When ON, the Radio
Emergency System, No. 4 battery, will provide
electrical power to the following systems:
• COMM 1
• NAV 1
• RMU 1
• ATC 1
• CDC
NOTE
Audio is available on headsets only
via the emergency position on the
respective audio panel.
LIMITATIONS
DC POWER
Batteries
Minimum battery voltage is 23 volts. Maxi-
mum battery charge rate prior to takeoff is 20
amps.
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