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 TM 1-1510-223-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
G. AVIONICS FLIGHT CHECKS (CONT)
a.
NAV B control (audio control panel) -
Depress on and rotate clockwise to set
volume.
b.
Frequency selectors (TACAN control
panel) - Set test frequency.
c.
Volume control (TACAN control panel) -
As required.
(1) INS/TACAN pushbutton selector
switch
(display
controller)
-
Depress to select TCN navigation
source annunciator on respective
EADI.
d.
Fly directly toward a TACAN station of
known direction and near enough to
provide a reliable signal.
e.
Set direction to station on course
indicator (EHSI) using remote course
knob (pedestal extension). Verify that
course deviation bar is nearly centered
and the to/from indicator reads to.
f.
Set reciprocal of direction to station on
course indicator (EHSI) using remote
course knob (pedestal extension).
Observe that course deviation bar is
nearly centered and the to/from
indicator reads from.
g.
Set direction to station again on course
indicator (EHSI) using remote course
knob (pedestal extension). Observe
that course deviation bar is nearly
centered and the to/from indicator reads
to.
4-20
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