Garmin GTN 625 Pilot's Manual page 310

GSD alerting is only active after departure and the following conditions are
Foreword
met:
• An ILS, LPV, LNAV/VNAV, or LNAV+V approach is active and vertical
Getting
Started
navigation indications are being displayed.
• Aircraft is below 1000 feet AGL.
Audio &
Xpdr Ctrl
• Gear is configured for landing.
When a GSD caution alert occurs on an ILS approach, the aural and visual
Com/Nav
annunciation "GLIDESLOPE" is issued. If a GSD caution alert occurs on an
FPL
LPV, LNAV/VNAV, or LNAV+V approach, the aural and visual annunciation
"GLIDESLOPE" is issued.
Direct-To
10.6.3.9.1 Inhibiting Glideslope Deviation (GSD) Alerts
Proc
NOTE: The G/S Inhibit function should be activated when flying a localizer
backcourse approach to prevents nuisance GSD alerts. GSD alerts are
Wpt Info
inhibited independent from all other FLTA, PDA, and GPWS alerts.
Map
Traffic
Terrain
NOTE: The G/S Inhibit function will only be active for a single approach
Weather
and the inhibit function will not remain active for subsequent approaches.
When G/S alerts are inhibited, they are only inhibited for a single approach.
Nearest
To inhibit G/S alerts on the next approach, the G/S Inhibit function must
be activated again between the first and second approaches.
Services/
Music
NOTE: Glideslope Deviation alerts will not be available if the G/S INHB
Utilities
function is activated.
System
Messages
Symbols
Appendix
Index
10-58
1. While viewing the TAWS-A Page, touch the MENU key.
2. Touch the G/S Inhibit key to inhibit or enable glideslope or
glidepath alerts (choice dependent on current state).
Garmin GTN 625/635/650 Pilot's Guide 190-01004-03 Rev. K