TM 55-1510-219-10
11.
Waypoint thumbwheel Set to
number of first TACAN station
to be used.
(15)
Switching from aided to unaided inertial.
operation.
1.
Data selector DSRTK/STS.
2.
Key "5" Press.
(Observe
INSERT/ADVANCE
pushbutton
light
illuminates; 000005 appears in right data display.)
3
INSERT/ADVANCE pushbutton
Press.
(Observe
INSERT/ADVANCE
pushbutton
light
extinguishes. Data display returns to normal with "5"
appearing in first digit of right display.)
NOTE
Benefits of previous aiding are
maintained
but
no
additional
automatic updates will be made.
(16)
To obtain readouts from INS.
NOTE
The computer is assumed to be in
the NAV mode for all data displays.
(a)
System
status:
Data
selector
DSRTK/STS.
(Observe numbers indicating system status appear in
right data display.)
(b)
Geographic present position: Data
selector L/L POS.
(Observe latitude and longitude of present position
appear in left and right data displays, respectively. Both
displays are to tenth of a minute.)
(c)
UTM position: Data selector UTM
POS.
(Observe northing and zone with easting of present
position appear in left and right displays, respectively.
Both displays are in kilometers.)
(d)
True heading: Data selector HDG DA.
(Observe aircraft heading appears in left data display
to nearest tenth of a degree.)
(e)
Ground
speed:
Data
selector
TK/GS.
(Observe ground speed appears in right data display to
nearest knot.)
(f)
Ground track angle: Data selector
TK/GS.
(Observe ground track angle appears in left data
display to nearest tenth of a degree.)
(g)
Drift angle: Data selector HDG DA.
(Observe drift angle appears in right data display to
nearest degree.)
(h)
Wind speed and direction: Data
selector WIND.
(Wind direction appears in left data display to nearest
degree and wind speed appears in right display to
nearest knot.)
(i)
Desired track angle: Data selector
DSRTK/STS.
(Observe desired track angle in left data display to
nearest degree.)
(j)
Track angle error: Data selector
XTK/TKE.
(Observe track angle error appears in right data
display to nearest degree.)
(k)
Cross track distance: Data selector
XTK/TKE.
(Observe cross track distance appears in left data
display to nearest nautical mile.)
(I)
Distance and time to next waypoint:
Data selector DIS/TIME.
(Observe distance to next waypoint, shown in "TO"
side of FROM-TO display, appears in left data display to
nearest nautical mile.)
(Observe time to reach next waypoint at present
ground speed appears in right data display to nearest
tenth of a minute.)
(m)
Extra precision geographic present
position display:
1.
Data selector L/L POS.
(Latitude and longitude of present position, to nearest
tenth of a minute, appears in left and right data displays,
respectively.)
2.
INSERT/ADVANCE
pushbutton Press.
(Observe arc-seconds related to present position
latitude and longitude, to nearest tenth of a second,
appear in left and right data displays, respectively.)
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