Airplane Flight Manual Supplement

190-00682-02 Rev. C Hawker Beechcraft C90A and C90GT King Air
Page 91 of 95
TRIPLE FED BUS HOT BATTERY BUS STANDBY BATTERY
PROPELLERS
Propeller Governor Test
WARNING/ANNUNCIATORS
Annunciator Indicator
Annunciator Power
L Oil Pressure Warning
Landing Gear Position Indicator
Landing Gear Warning Horn
R Oil Pressure Warning
Stall Warning
L Fuel Pressure Warning
R Fuel Pressure Warning
L Auxiliary Fuel Quantity
Warning
R Auxiliary Fuel Quantity
Warning
WEATHER
L Pitot Heat
STANDBY BATTERY POWER SUPPLY
The G1000 installation incorporates a 24 vdc, 5 Ah JET model PS-835 Standby Battery
that provides electrical power for the standby attitude gyro, standby altimeter vibrator,
and internal lighting for the three standby instruments for a minimum of 30 minutes
following a total loss of aircraft power including the aircraft’s battery.
A push button switch located directly below the standby airspeed indicator controls the standby battery
power system. The switch is a push ON (switch latches in), push OFF (switch pops out) type of switch.
The system has three modes: OFF, ON, and ARM.
OFF The system is OFF when the Standby Battery switch is popped out. There are no
internal switch annunciators illuminated in the switch when the system is OFF.
ON (Amber) Illuminates when the standby battery is powering the standby instruments. The Standby
Battery switch must be latched ‘IN’ and the airplane has no source of normal electrical
power for the standby battery to power the standby instruments. When the ON
annunciator is illuminated, the standby battery will provide electrical power for the three
standby instruments for at least 30 minutes.
ARM (Green) The system is ARMed for automatic operation when the Standby Battery switch is latched
‘IN’ and the airplane is being powered by a normal source of electrical power. Normal
source of electrical power includes the airplane’s battery, or, at least one generator, or
external power.