Curved Trend Vector
The white curved trend vector shows at the nose of the airplane symbol and extends to the base of the track line. The curved trend vector shows the airplane curved path directional trend related to ground speed and cross track acceleration in relation to the map display. The end point of each vector segment shows the airplane predicted position at 30, 60, and 90 seconds in the future.
The curved trend vector has 3 segments that show 30, 60, and 90 second position estimates of the airplane because of roll. One segment shows when the selected range is 10 NM or less. Two segments show when the selected range is 20 NM. Three segments show when the selected range is 40 NM or more.
Selected Heading
The selected heading bug and vector show the current selected heading value from the DFCS mode control panel.
The magenta selected heading bug follows the selected heading along the outer edge of the compass rose arc.
The magenta, large space, short dash selected heading vector starts at the point of the airplane symbol and extends to the compass rose directly under the selected heading bug.
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CDS -- ND - CENTERED MAP
When the flight control computer is in lateral navigation (LNAV) or VORLOC mode, the selected heading vector shows when the selected heading value changes and for 10 seconds after the selected heading change. The vector is blank at all other times. The heading bug continues to show.
Bearing Pointers
Bearing pointers to tuned VOR or ADF stations show on the compass rose arc when selected on the EFIS control panel. Bearing pointer identification and DME distance show in the lower right and left of the display.
These systems show data and warning messages on the centered map display:
-Traffic Alert and Collision Avoidance System
(TCAS)
-Enhanced Ground Proximity Warning System (EGPWS)
-Weather Radar and Predictive Windshear.
Flight Plan Path
The flight plan path shows as a sequence of straight lines between various flight legs. Flight legs are the path between two points, usually waypoints.
The flight plan path shows magenta if it is active. If the flight plan path is not active, it shows as a dashed cyan line.
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Changes to a flight plan path show white until they become active when you push the EXEC key on the control display unit (CDU).
Flight Plan Waypoints
Flight plan waypoints show specific selected navigation points or positions along the FMC flight plan path.
Waypoints show as a four point star symbol on the map display. Next to the waypoint is an identifier that shows the name of the waypoint. Waypoints and identifiers show white if they are not active and magenta if they are active. The active waypoint is the next one on the current airplane path. All other visible waypoints are not active, and thus, white.
The active waypoint name, estimated time of arrival, and active waypoint distance show in the upper left corner of the expanded map display. The active waypoint name is magenta. Estimated time of arrival and distance to go show white.
Altitude Profile Points
The green Altitude profile points are indicators sent by the FMC to identify these active flight plan steps:
-Top-of-climb (T/C)
-Top-of-descent (T/D)
-End-of-descent (E/D)
-Step climb (S/C).

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CDS -- ND - CENTERED MAP
Altitude profile points are in positions on the active flight plan path line at the predicted point of occurrence. If the FMC finds that the predicted point of occurrence is not on the flight plan path line, or if the altitude profile point has already occurred, the altitude profile point does not show.
Ground Speed
Ground speed shows full time in the upper left corner of the centered map display. Ground speed shows in 2-digit format at speeds below 29.5 kts and 3-digit format above 29.5 kts.
Ground speed is white and shows in whole numbers only.
True Airspeed
True airspeed shows full time in the upper left of the centered map display. True airspeed shows in 3 digits for air speeds greater than 101 kts. True airspeed less than 101 knots shows as 3 dashes.
Map Source Annunciation
Map source annunciation shows that the FMC is the source of the map mode data. FMC shows in green at the bottom of the centered map display.
Range To Altitude Arc
Range to altitude shows as a green arc that is in the center and across the heading vector. The arc
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represents the distance from the airplane symbol where the airplane gets to the reference altitude if it continues on the present track angle and present flight path angle.
Wind Speed and Angle
Wind speed and angle show in the upper left of the expanded map display. The display is white.
　
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