Garmin GNS 530 Pilot's Manual And Reference page 200

SECTION 12
TERRAIN
TERRAIN System Test Fail
TERRAIN Alerting is disabled
No GPS position or excessively degraded
GPS signal
System Test in progress
System Test pass
Forward Looking Terrain Avoidance
issued when the aircraft flight path is above terrain, yet is projected to come within the minimum clearance
threshold.
12-6
TERRAIN Page
Alert Type
Annunciation
Table 12-3 Additional System Annunciations
Phase of Flight Minimum Clearance
Altitude Level Flight (ft)
Enroute
Terminal
Approach
Departure
Table 12-4 Minimum Terrain and Obstacle Clearance Values for FLTA Alerts
GNS 530(A) Pilot's Guide and Reference
Pop-Up Alert
None
Minimum Clearance
Altitude Descending (ft)
700
350
150
100
None
None
None
None
None
500
300
100
100
190-00181-00 Rev. G