TM 1-1520-218-10
3C-210
A/B
Figure 3C-152. TVI-920 Transponder/TCAS Mode/Warning Flags and Messages
Table 3C-110. TVI-920 Transponder/TCAS Mode/Warning Flags and Messages
SLOT NUMBER
SYMBOL
INTERPRETATION
1
6NM or 12NM
Selected forward range of traffic display.
1 & 2
TCAS OFF
TCAS set to standby, either manually or automatically.
3
TEST
TCAS set to test mode.
3 & 4
No
bearing
message (Red if
RA; yellow if TA)
Range and altitude of Resolution Advisories (RA) or Traffic
Advisories (TA) intruders for which no bearing information is
available.
4
ABV
Traffic displayed in altitudes from + 9900 ft to – 2700 ft, relative
to own aircraft. (If no message is displayed, traffic display is
from + 2700 ft to – 2700 ft relative to own aircraft.)
4
BLW
Traffic displayed in altitudes from – 9900 ft to + 2700 ft, relative
to own aircraft. (If no message is displayed, traffic display is
from + 2700 ft to – 2700 ft relative to own aircraft.)
5
V/S
Vertical speed is unreliable, or system is in test mode.
6 & 7
ONLY T/A
TCAS set to or operating in TA only mode. If TA occurs,
message and box border change to yellow.
7
R/A
Resolution advisory or vertical speed is unreliable (Red flag).
7
TCAS
TCAS functions have failed (Yellow flag).
