Section 7
Columbia 400 (LC41-550FG)
Description of the Airplane and Systems
Initial Issue of Manual: November 10, 2004
RC050002
Latest Revision Level/Date: -/11-10-2004
7-65
Stall Warning System (Electrical) –
Operation of the stall warning system requires the master
switch to be on since the stall warning is connected to the left and right buses. Breakers in the
circuit breaker panel protect the stall warning indicator. The stall warning is protected by a 2-
amp circuit breaker.
GROUND POWER PLUG
The ground power plug allows external power to be connected to the aircraft. The ground power
plug is located behind the left wing between the trailing edge of the flap and the step. The plug
allows connection to a 12-volt DC power source for maintenance and allows the engine to be
started from a ground power cart. The aircraft power must be off when the plug is connected or
disconnected to the 12-volt DC power source. Once connected, turning the BATT switches on
will charge the batteries.
CAUTION
The battery should be carefully monitored while charging. Do not exceed 14
volts DC input.
During normal operation of the ground power plug, the crosstie switch should be on to energize
the left and right buses, and the BATT and ALT switches should be off to keep from overheating
the battery.
The procedure for starting the engine using the ground power plug and a power cart is contained
on page 4-9 of this manual.