Garmin GPS 400 - Manual (Page 173)

GPS 400 Pilot’s Guide and Reference 190-00140-60 Rev. H 9-5
SECTION 9
TERRAIN
Table 9-2 shows the possible TERRAIN alert types with corresponding annunciations.
Alert Type Annunciation Pop-Up Alert
TERRAIN Failure None
TERRAIN Inhibited None
TERRAIN Not Available None
Required Terrain Clearance (RTC) Advisory
Required Terrain Clearance (RTC) Caution
(FLASHING) (FLASHING)
Imminent Terrain Impact (ITI) Advisory
Imminent Terrain Impact (ITI) Caution
(FLASHING) (FLASHING)
Required Obstacle Clearance (ROC) Advisory
Required Obstacle Clearance (ROC) Caution
(FLASHING) (FLASHING)
Imminent Obstacle Impact (IOI) Advisory
Imminent Obstacle Impact (IOI) Caution
(FLASHING) (FLASHING)
Premature Descent Alert (PDA) Advisory
Table 9-2 TERRAIN Alert Summary