TM 55-1510-222-10
Observe
INSERT/ADVANCE
and
WYPT
CHG
pushbutton annunciators extinguish. The loaded digit
will appear in right position of TO-FROM display and will
be flashing on and off. Distance to that station to
nearest nautical mile appears in left data display. The
right display continues to display time to next waypoint.
8.
Data selector - WIND, momentarily.
Returns INS to normal display mode.
NOTE
If in aided TACAN operation and if
the desired station is not being
selected, exit aided operation per
procedure: Switching From Aided to
Unaided Inertial Operation, perform
steps 1 thru 8, and then return to
aided operation per procedure: Aided
TACAN Operation.
(s) Coordinates of any waypoint:
1.
Data selector - L/L WY PT or UTM WY
PT.
2.
Waypoint thumbwheel - Set desired
waypoint. Observe following:
a.
L/L WY PT: latitude and longitude
of desired waypoint, to a tenth of a minute, appear in left
and right data displays respectively.
b.
UTM WY PT: Northing and zone
with easting of desired waypoint, to a kilometer, appear
in left and right data displays respectively.
3.
INSERT/ADVANCE pushbutton - Press.
Observe the following:
a.
L/L
WY
PT:
The
arc-seconds
related to desired waypoint latitude and longitude, to a
tenth of an arc-second appear, in left and right displays
respectively.
b.
UTM WY PT: The extra precision
display related to desired waypoint northing and easting,
in meters, appear in left and right data displays
respectively.
•
L/L WY PT: A coordinate is the addition of values
for degrees, whole minutes and seconds.
•
Example: W 87° 54' 58.6 = 87° 54.9W and 58.6.
•
UTM WY PT: A coordinate is the addition of the
values for kilometers and meters.
•
Example: S 2,474,706m = 2474S and 706.
(t)
TACAN station data:
1.
Keys 7 and 9 - Press simultaneously.
2.
Waypoint thumbwheel - Set to desired
TACAN station.
Observe number of TACAN station being used for
navigation flashes on and off.
a.
L/L WY PT:
Latitude and longitude of desired TACAN station, to
tenth of minute, appears in left and right data displays,
respectively.
b.
UTM WY PT: Northing and zone
with easting of desired TACAN station, to a kilometer,
appear in left and right data displays, respectively.
3.
INSERT/ADVANCE PUSHBUTTON -
Press. Observe the following:
a.
L/L WY PT:
The arc-seconds related to desired TACAN station,
to tenth of an arc-second, appear in left and right data
displays respectively.
b.
UTM WY PT:
The extra precision display related to desired
TACAN station northing and easting, in meters, appear
in left and right data displays respectively.
NOTE
Direction is indicated in normal data
displays.
•
L/L WY PT: A coordinate is the addition of values
for degrees, whole minutes, and seconds.
•
Example: W 87°° 54' 58.6 will be displayed as 87°
54.9W and 58.6.
•
UTM WY PT: A coordinate is the addition of values
for kilometers and meters.
•
Example: S 2,474,706 m will be displayed as 2474
S and 706.
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