Pilot's Guide
190-00498-00 Rev. AGarmin G1000 Pilot’s Guide for Cessna Nav III
9-8
ANNUNCIATIONS & ALERTS
A red ‘X’ may be the result of an LRU or an LRU func-
tion failure.  The  following  figure  illustrates  all  possible 
flags and the responsible LRUs.
Figure 9-5 G1000 System Failure Annunciations
GDC 74A Air Data 
Computer
GTX 33 Transponder
OR
GIA 63 Integrated 
Avionics Units
GDC 74A Air Data 
Computer
GEA 71 Engine 
Airframe Unit
OR
GIA 63 Integrated 
Avionics Unit
GIA 63 Integrated 
Avionics Units
GRS 77 AHRS
OR
GMU 44 
Magnetometer
GIA 63 Integrated 
Avionics Units
GIA 63 Integrated 
Avionics Units
Voice Alerts
The following voice alerts can be configured for ‘Male’ 
or ‘Female’ gender by using the Aux System Setup Page 
on the MFD.
Voice Alert Alert Trigger
“Traffic” Played when a Traffic Advisory (TA) is 
issued.
“Traffic Not 
Available”
Played when the traffic system fails or can
-
not communicate.
NOTE:  Voice alerts are provided to the G1000 
by GIA 63 #1.  Should this unit fail, audio and 
voice alerts will no longer be available.










