TM 55-1510-219-10
(n) Geographic present inertial position
display.
1.
Data selector L/L WYPT.
2.
HOLD pushbutton Press.
(Observe HOLD pushbutton light illuminates, latitude
and longitude or present inertial position to a tenth of
degree
appear
in
left
and
right
data
displays,
respectively.)
NOTE
While HOLD pushbutton light is
illuminated, TACAN and data link
updates are inhibited.
3.
INSERT/ADVANCE
pushbutton Press.
(Observe arc-second related to present inertial position
latitude and longitude, to nearest tenth of a second,
appears in left and right data displays, respectively.)
4.
Data selector UTM WYPT.
(Observe coordinates in UTM grid.)
5.
HOLD pushbutton Press.
(Observe INS returns to normal operation and HOLD
pushbutton light extinguishes.)
(o) UTM present inertial position
display:
1.
Data selector UTM WYPT.
2.
HOLD pushbutton Press.
(Observe
HOLD
pushbutton
light
illuminates.
Northing and zone with easting of the present inertial
position in kilometers appear in left and right data
displays, respectively.)
NOTE
While HOLD pushbutton light is
illuminated, TACAN and data link
updates are inhibited.
3.
INSERT/ADVANCE
pushbutton Press.
(Observe extra precision values related to present
inertial position northing and easting, to nearest meter,
appear in left and right data displays, respectively.)
4.
Data selector L/L WYPT.
(Observe
coordinates
in
latitude-longitude
coordinates.)
5.
HOLD pushbutton Press.
(Observe INS returns to normal operation and HOLD
pushbutton light extinguishes.)
(p) Distance and time to waypoint other
than next waypoint:
1.
WYPT
CHG
pushbutton
Press.
(Observe WYPT CHG and INSERT/ ADVANCE
pushbutton lights illuminate.)
2.
Key "0" Press.
(Observe FROM side of FROM-TO data display
changes to "0".)
3.
Key corresponding to desired
waypoint Press.
(Observe "TO" side of FROM-TO data display
changes to desired waypoint number.)
NOTE
Do not press INSERT/ADVANCE
pushbutton. This would cause an
immediate flight plan change.
4.
Data selector DIS/TIME.
(Observe distance to desired waypoint appears in left
data display to nearest nautical mile. Time to reach
desired waypoint at present ground speed appears in
right data display to nearest tenth of a minute.)
5.
CLEAR pushbutton Press.
(Observe INS returns to normal operation.)
(Observe
INSERT/ADVANCE
and
WYPT
CHG
pushbutton lights extinguish. Waypoints defining
current navigation leg appear in FROM-TO display.)
(q) Distance and time between any two
waypoints:
1.
WYPT
CHG
pushbutton
Press.
(Observe
WYPT
CHG
and
INSERT/ADVANCE
pushbutton lights illuminate.)
2.
Keys corresponding to desired
waypoints Press in sequence.
(Observe desired waypoint numbers appear in
FROM-TO
data
display
as
keys
are
pressed.)
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