TM 1–1520–238–T–1
Change 5
4–33
4–5
HARS – INTERACTIVE FD/LS CHECK
4–5
(ADC) (cont)
TASK
RESULT
c. On DEK, press and
release ()/0 and
WV/8 keys.
If any MUX NO–GO appears
on HOD, refer to
TM 9-1230-476-20-2 for
troubleshooting the MUX
system.
When MUX
COMMUNICATION GO
appears on the HOD, go to
next step.
NOTE
SP1 PPOS data, MV, and SPH data can be
obtained from:
Maintenance Officer, S–3 or DOD FLIP (e.g.
VFR Supplement, IFR Supplement, Airport
Directory VFR Sectional) and UTM Map.
SP1 data must be within 500 to 750 meters of
present location.
d. On DEK, rotate
DATA ENTRY switch
to SP1.
The first page of the aircraft
position menu is displayed.
e. On DEK, press and
release the ENTER
SPACE key.
The second page of the
aircraft position menu is
displayed.
f. On DEK, press and
release L SHIFT and
MNO/5 keys.
The cursor appears under the
first character in the MV line
and both begin flashing.
g. Enter the magnetic
variation (MV) data
into the DEK.
The MV data is being edited
during this operation and
after the last character has
been entered, the edit mode
is automatically exited (ACY).
Press MID and 2 (E) to save
data (ACZ).
h. On DEK, press and
release L SHIFT and
STU/7 keys.
The cursor appears under the
first character in the SPH line
and both begin flashing.
