(b)
For NCD IRU true heading or FMC/IRU present position latitude and longitude, the grid heading designator is replaced by three dashes.
(c)
For failed IRU true heading or FMC/IRU present position latitude and longitude, the grid heading box, legend and designator number are removed.
(6)
Active Waypoint Annunciator
(a)
A magenta colored display annunciates the FMC active waypoint.
(b)
For NCD or invalid FMC waypoint data, the annunciation is removed.
(7)
ETA/TTG
(a)
Estimated time of arrival (ETA) at the active waypoint is indicated by a white colored readout and Z legend. ETA is displayed if the L,R FMC is selected as the system source. The readout is in units of GMT rounded to the nearest tenth of a minute.
(b)
Time to go (TTG) until active waypoint is indicated by a white colored readout and TTG legend. TTG is displayed if the L,C,R CDU is selected as the system source.
(c)
For NCD FMC ETA, the numeric ETA readout is replaced by dashes. For invalid FMC ETA, the readout and legend are removed.
(d)
For NCD CDU TTG, the numeric TTG readout is replaced by dashes. For invalid CDU TTG, the readout and legend are removed.
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ALL ú ú 27 Page 55 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
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MAINTENANCE MANUAL
(8)
Distance To Go
(a)
Distance to go (DTOGO) to active waypoint is displayed by a white colored readout and NM legend. The readout is in units of nautical miles.
(b)
For NCD FMC DTOGO, the numeric readout is replaced by dashes.
(c)
For invalid FMC DTOGO, the readout and legend are removed.
(9)
True Airspeed (TAS)
(a)
ADC TAS is displayed by a white colored TAS legend and digital readout.
(b)
For NCD ADC TAS, the numeric readout is replaced by dashes.
(c)
For invalid ADC TAS, the legend and readout are removed.
(10)
Ground Speed
(a)
Ground speed (GS) is displayed by a white colored GS legend and digital readout.
(b)
For NCD FMC GS, the numeric readout is replaced by three dashes.
(c)
For invalid IRU GS, the legend and readout are removed.
(11)
Wind Speed and Direction
(a)
The white colored readout and directional pointer indicate the wind speed in knots and direction with respect to the display reference.
(b)
Wind data is not displayed until wind speed exceeds six knots. The data is removed if wind speed drops below four knots.
(c)
For NCD FMC data, the directional pointer is removed and the numeric readout is replaced by dashes.
(d)
For invalid FMC data, the readout and directional pointer are removed.
(12)
ADF/VOR Pointers
(a)
The selected ADF and/or VOR bearing pointers are displayed along the compass rose.
(b)
ADF pointers are displaced clockwise from the displayed present heading an amount equal to the received ADF relative bearing. VOR pointers are displaced clockwise from the displayed present heading by an amount equal to the difference of the received VOR omnibearing and the current heading of the airplane.
(c)
Left and right system pointers are distinguished by shape. The thin pointer displays left system bearing, and the thick pointer displays right system bearing.
(d)
Reciprocal bearing pointers are distinguished by the arrow head pointing toward the airplane symbol. These pointers are displayed when the reciprocal bearing is in view.
(e)
ADF and VOR pointers are distinguished by color. ADF pointers are colored cyan, and VOR pointers are green. The same color coding is used for the ADF/VOR switch position annunciation and frequency/identifier located in the lower corners of the map format.
(f)
For NCD ADF/VOR data, the affected pointer is removed.
(g)
For invalid ADF/VOR data, the affected pointer is removed and the associated ADF L, ADF R, VOR L, VOR R flag (Fig. 12B) is displayed.
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