FAA Approved Airplane Flight Manual Supplement

Hawker Beechcraft King Air 300/300LW 190-00716-03 Rev.4
Page 134 of 167
FLIGHT INSTRUMENTS
G1000 FLIGHT INSTRUMENTS
Flight instruments are an integrated part of the G1000 system. For system descriptions, operating
instructions, and abnormal failure indication refer to the Cockpit Reference and Pilot’s Guides.
STANDBY FLIGHT INSTRUMENTS
There are three 2 ¼ inch standby instruments that are arranged vertically
directly to the right of the pilot’s Primary Flight Display:
 Standby attitude indicator
 Standby altimeter
 Standby airspeed indicator
The standby attitude indicator located at the top of the stack is normally
powered by the Triple Fed Bus. In the event of total loss of aircraft
electrical power, there is a standby battery that will power the standby
attitude indicator for at least 30 minutes.
The second instrument in the stack is a standby altimeter. It is a
mechanical instrument that requires no electrical power to display
altitude. Electrical power is used for internal instrument lighting, and for
an internal vibrator that is used to minimize indicator pointer sticking.
The vibrator is normally powered from the Triple Fed Bus. In the event
of total loss of normal aircraft electrical power, the vibrator and internal
lighting are powered by the standby battery. The standby altimeter
uses the copilot’s static system for its source of static air pressure.
The bottom instrument is a mechanical airspeed indicator. It is a
mechanical instrument that requires no electrical power to operate.
Electrical power is used for internal lighting. In normal operation, power
for standby instrument lighting comes from the Triple Fed Bus. In the
event of a total loss of aircraft electrical power, the standby battery will
power the instrument’s internal lighting. The standby airspeed indicator
uses the copilot’s static system for its source of static air pressure, and
the copilot’s pitot system for its source of impact air pressure.
Figure 14, Standby Flight Instruments
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