TM 55-1510-220-10
NOTE
These displays are not loadable prior
to the NAV mode.
(n)
Geographic present inertial position display.
1.
Data selector L/L WY PT.
2.
HOLD pushbutton Press. Observe
HOLD
pushbutton
annunciator
illuminates, latitude and longitude or
present inertial position to a tenth of an
arc-second appear in left and right data
displays, respectively.
NOTE
While HOLD pushbutton annunciator
is illuminated, TACAN 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 WY PT. Observe
coordinates in UTM grid.
5.
HOLD pushbutton Press. Observe INS
returns to normal operation and HOLD
pushbutton annunciator extinguishes.
(o)
UTM present inertial position display:
1.
Data selector UTM WY PT.
2.
HOLD pushbutton Press. Observe
HOLD
pushbutton
annunciator
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 annunciator
is illuminated, TACAN updates are
inhibited.
3.
INSERT/ADVANCE pushbutton Press.
Observe extra precision values related
to the present inertial position northing
and easting to nearest meter, appear in
left
and
right
data
displays,
respectively.
4.
Data selector UL WY PT. Observe
coordinates
in
latitude-longitude
coordinates.
5.
HOLD pushbutton Press. Observe INS
returns to normal operation and HOLD
pushbutton annunciator extinguishes.
(p)
Distance and time to waypoint other than next
waypoint:
1.
WYPT
CHG
pushbutton
Press.'
Observe
WYPT
CHG
and
INSERT/ADVANCE
pushbutton
annunciator illuminates.
2.
Key "0" Press. Observe "FROM" side
of TO-FROM data display changes to
"0".
3.
Key corresponding to desired waypoint
Press. Observe "TO" side of TOFROM
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 annunciators
extinguish. Waypoints defining current
navigation leg appear in TOFROM
display.
Change 2 3-63
