TM 1-1510-224-10
If the VOR or TACAN stations are out of range
of the EFIS map, either a solid magenta or dashed
magenta line will appear if within the 90 degree arc. A
solid magenta line with an arrow indicates the inbound
course to the station. A dashed magenta lines indicates
the outbound radial.
e.
EHSI Long Range Navigation (LRN) Multiple
Waypoint Map Mode. The EFIS can display multiple
waypoints from a long range navigation (INS) system
(fig. 3-17).
With
the
INS
programmed
for
multiple
waypoints, and the weather radar range set to a range
allowing display of multiple waypoints, selecting the MAP
mode will permit up to six (6) to be displayed on the
EHSI.
When the map mode has been selected, the
following will occur:
The course pointer and course deviation bar
displays will be removed.
Both bearing pointers will be removed.
The multiple waypoints will appear on the EHSI.
Each waypoint will be identified by a number
between 00 and 09.
The waypoint to which the aircraft is flying will be
magenta, with all other waypoints in white.
If the EFIS is receiving valid TACAN, VOR
information, and DME distance, the navaids for the two
VOR or TACAN stations will be available for display on
the EFIS. The blue navaid will be VOR1 (NAV1) and the
green navaid will be VOR2 (NAV2).
The EHSI can display up to six LRN waypoints
and two VOR station navaid symbols at the same time.
This assumes that all waypoints are within the selected
weather radar range, and all are within the limits of the
heading display of the EHSI in the map mode.
The specific functions of the multiple-waypoint
map mode are as follows:
(1) Desired track.
The
desired
track
annunciator and a digital readout of the desired track
from past waypoint to the next waypoint are shown in the
upper left corner of the EHSI.
(2) To-from
annunciator.
The
to-from
display is located to the right of the desired track digital
readout. It shows TO when the aircraft is flying to the
waypoint.
f.
EHSI Weather Radar Displays.
(1) Target alert annunciator (all formats).
Figure 3-17. EHSI Multiple Waypoint Map Mode (LRN)
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