Terrain Status - Garmin GI 275 Pilot's Manual

Hazard Avoidance

TERRAIN STATUS

When power is applied to the system, the terrain function conducts a self-test of its visual
annunciations and aural alerts. A voice alert is issued at test completion. If an external
TAWS-B system is configured to interface with the MFI, test annunciations for TAWS may be
displayed on the MFI.
The test may also be manually initiated. The option to run a terrain test may be disabled
when the ground speed exceeds 30 knots, depending on the terrain function configuration.
The following table shows the different terrain status annunciations and conditions that may
occur.
Alert Type
Terrain test in progress
Terrain alerting inhibited
No GPS position
Excessively degraded GPS
signal or out of database
coverage area
Terrain test fail; Terrain
or Obstacle database
unavailable or invalid; Invalid
software configuration; or
system audio fault
External TAWS system test in
progress
External TAWS system
Alerting Inhibited
External TAWS system fail
External TAWS not available
* "Terrain System Available" will be heard when sufficient GPS signal is received, or Terrain
database coverage area re-entered.
** Aural alert provided by the external TAWS-B System
150
Aural Alert
None
None
"Terrain System Not
Available" *
"Terrain System Not
Available" *
"Terrain System Failure"
**
**
**
**
Terrain System Status Annunciations
Garmin GI 275 Pilot's Guide
Annunciations
Annunciations
All Pages 'Terrain' Page
TER
TER
TER
TER
TER TEST
TER INHB
TER N/A
TER N/A
TER FAIL
TAWS TEST
TAWS INHB
TAWS FAIL
TAWS N/A
190-02246-01 Rev. A