Navigation Display Symbols

Table 8

TCAS
SYMBOL NAME MODE DEFINITION
TCAS
Offscale
TCAS
Offscale
(A for TA)
(R for RA)
ILS
VOR
NAV
ARC
With TFC selected, RA or TA traffic is outside the traffic area covered by the selected ND range.
+05
−05
  00
TCAS
Relative
Traffic
(W)
ILS
VOR
NAV
ARC
With TA, TA/RA, or TFC selected, displays relative traffic altitude in hundreds of feet. For an intruder above the airplane, the relative altitude will be placed over the traffic symbol preceded by an + sign. For intruders co-altitude or lower, the relative altitude will be placed below the target symbol preceded by - sign (except 00, which had no sign). Range must be 40 NM or less on some airplanes.