TM 55-1510-222-MTF
P R O C E D U R E
T R O U B L E S H O O T I N G
R E F E R E N C E
G. AVIONICS FLIGHT CHECKS (CONT)
d. Volume control (TACAN con-
trol panel) - As required.
e. Course indicator switches (in-
strument panel) - TACAN.
f. Fly directly toward a TACAN
station of known direction
and near enough to provide a
reliable signal.
g. Rotate course card on course
deviation indicators until di-
rection to station is beneath
course index. The course de-
viation
indicator
needle
should be nearly centered and
the to/from indicator should
read to. The red glideslope
warning flag should be visible
but the NAV warning flag
should be concealed.
h. Rotate course card until di-
rection to station is beneath
reciprocal course index. The
course deviation indicator
needle should be centered and
the to/from indicator should
read from.
i. Rotate the course card until
the direction to the station is
directly below the course in-
dex again and the to/from in-
dicator reads to.
j. Fly a 90° right turn such that
the flight path is at a 90° angle
to the direction to the station.
The course deviation indica-
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