Cessna SkyHawk SP 172S - G1000 Annunciator Panel; Master Switch

CESSNA
MODEL
172S NAV Ill
GFC 700 AFCS
SECTION 7
AIRPLANE AND SYSTEM DESCRIPTION
ELECTRICAL SYSTEM (Continued)
G1000 ANNUNCIATOR PANEL
All system alerts, cautions and warnings are shown on the right side of
the PFD screen adjacent
to the vertical speed indicator. The following
annunciations are supported:
OIL PRESSURE
LOW FUEL L
LOW VOLTS
STBY BATT
LOW VACUUM
LOW
FUEL R
HIGH VOLTS
CO LVL HIGH
Refer to the Garmin G1 000 CRG Appendix A for more information on
system annunciations.
MASTER SWITCH
The MASTER switch is a two-pole, rocker-type switch. The BAT side of
the switch
controls the main battery electrical power to the airplane.
The ALT side of the switch controls the alternator system.
In normal operation, both sides of the switch (ALT and BAT) are ON
simultaneously; however, the BAT side of the switch may be selected
separately
as necessary. The AL T side of the switch can not be set to
ON without the BAT side of the switch also being set to ON.
If
the alternator system fails, the MASTER switch may be set in the
OFF position to preserve main battery capacity for later in the flight.
With the MASTER switch OFF and the STBY BATT switch in the ARM
position, the standby battery will power the essential bus for a limited
time. Time remaining may be estimated by monitoring essential bus
voltage. At 20 Volts, the standby battery has little or no capacity
remaining.
(Continued Next Page)
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