Garmin G1000 Pilot’s Guide for the Socata TBM 850/900
190-00709-05 Rev. D446
HAZARD AVOIDANCE
FORWARD LOOKING TERRAIN AVOIDANCE
Reduced Required Terrain Clearance (RTC) and Reduced Required Obstacle Clearance (ROC)
alerts are issued when the aircraft flight path is above terrain, yet is projected to come within the minimum
clearance values in Figure 6-140. When an RTC alert is issued, a potential impact point is displayed on the
Terrain-SVS Page.
Imminent Terrain Impact (ITI) and Imminent Obstacle Impact (IOI) alerts are issued when the
aircraft is below the elevation of a terrain or obstacle cell in the aircraft’s projected path. ITI and IOI alerts are
accompanied by a potential impact point displayed on the Terrain-SVS Page. The alert is annunciated when
the projected vertical flight path is calculated to come within minimum clearance altitudes in Figure 6-140.
0
100
200
300
400
500
600
700
800
0 5 10 15 20 25 30
Distance From Runway (NM)
Required Terrain Clearance (FT)
Level (FT) Descending (FT)
Figure 6-140 FLTA Alert Minimum Terrain and Obstacle Clearance Values
Distance From Runway (NM)
Required Clearance (FT)
FLTA alerts are automatically inhibited when the aircraft is less than 200 feet above the destination runway
elevation while within 0.5 nm of the approach runway or the aircraft is between runway ends.
SYSTEM STATUS
During power-up, Terrain-SVS conducts a system test of its alerting capabilities. The system issues a voice
alert when the test has concluded.
Alert Type
PFD/MFD*
System Status
Annunciation
Voice Alert
System Test in Progress None
System Test Pass None “Terrain System Test OK”
Terrain System Test Fail “Terrain System Failure”
* Annunciation is displayed on the MFD when terrain display is enabled.
Table 6-18 Terrain-SVS System Test Status Annunciations
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