Garmin Flight Deck 100 用户手册
Embraer Prodigy
®
Flight Deck 100 Pilot’s Guide
190-00728-04 Rev. A
398
HAZARD AVOIDANCE
FORWARD LOOKING TERRAIN AVOIDANCE
The Forward Looking Terrain Avoidance feature of TAWS-A compares the aircraft’s projected flight path with
known terrain and obstacles in their respective databases and issues four types of alerts as either a caution or
a warning:
a warning:
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 6-91. When an RTC alert is issued, a potential impact point is displayed on the
TAWS-A Page.
clearance values in Figure 6-91. When an RTC alert is issued, a potential impact point is displayed on the
TAWS-A 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 TAWS-A Page. The alert is annunciated when
the projected vertical flight path is calculated to come within minimum clearance altitudes in Figure 6-91.
are accompanied by a potential impact point displayed on the TAWS-A Page. The alert is annunciated when
the projected vertical flight path is calculated to come within minimum clearance altitudes in Figure 6-91.
Required Terrain Clearance
0
100
200
300
400
500
600
700
800
0
5
10
15
20
25
30
Distance From Runway (NM)
R
eq
ui
red
T
er
rai
n C
lear
an
ce (
FT
)
RTC Level (FT)
RTC Descending (FT)
Figure 6-91 FLTA Alert Minimum Terrain and Obstacle Clearance Values
Distance From Runway (NM)
Required
Terr
ain Clear
ance (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.