TM 1-1510-224-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
AVIONICS FLIGHT CHECKS (CONT)
a.
Marker beacon sensitivity switch
(pedestal extension) - HI.
b.
Fly toward marker beacon station.
When marker beacon indicator light
illuminates and audio tone sounds,
set
sensitivity
switch
to
LO.
Observe
that
marker
beacon
indicator light and audio tone cease.
c.
Continue
to
fly
toward
station.
Verify that marker beacon indicator
light again illuminates and audio
illuminates and audio tone sounds.
*10.
TACAN - Check as follows:
(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.
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