TM 55-1510-221-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
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
direction to station is beneath course index. The
course deviation 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 direction 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 index again and the to/from
indicator reads to.
j.
Fly a 90
right turn such that the flight path is at a90
angle to the direction to the station. The course
deviation indicator needle should deflect noticeably to
the left after one or two miles of flight (assuming the
station is 25 to 50 miles from the aircraft).
k.
TACAN range test Achieve adequate usable reception
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