Garmin GTN 625 Pilot's Manual page 259

Alert Type
GPS position
unavailable/
degraded,
outside of
terrain database
coverage
Sufficient GPS
signal reception
restored
Incorrect TAWS
configuration,
radar altimeter
unavailable,
GPS position
unavailable/
degraded, TAWS
audio fault
GPWS Inhibit
GPWS Not
Available.
Incorrect TAWS
configuration,
radar altimeter
unavailable,
GPS position
unavailable/
degraded, TAWS
audio fault.
* Alerts with multiple messages are configurable. Alerts for the default configuration are indicated with
asterisks.
** VCO alerts are not issued if both TAWS and GPWS systems have failed or are not available
† GSD alert will be available if a valid ILS is being used for navigation, even in no valid GPS signal
is being received.
190-01004-03 Rev. F
Alert
Annunciation
None
*
Table 10-13 TAWS-A Alerts Summary
Garmin GTN 625/635/650 Pilot's Guide
Pop-Up Alert
(Except TAWS-A Page)
N/A
N/A
N/A
N/A
N/A
Aural
Foreword
Message
Getting
"TAWS Not
Started
Available"
Xpdr Ctrl
Com/Nav
"TAWS
Available"
Direct-To
(aural message
only in flight)
"GPWS System
Failure"
Wpt Info
"GPWS System
Terrain
Failure"
Weather
Nearest
Services/
None
Utilities
System
Messages
Symbols
Appendix
10-47
FPL
Proc
Map
Traffic
Music
Index