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 TM 1-1510-223-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
G. AVIONICS FLIGHT CHECKS (CONT)
*12. Encoding altimeter - Check as follows:
a.
Mode C switch (transponder control
panel) - ON.
b.
Contact ground radar facility and
request their altitude readout. Observe
that ground facility altitude readout
agrees with aircraft altitude within 200
feet.
*13. Radar set - Check while airborne as follows:
a.
RADAR system mode selector switch -
OFF.
b.
Radar receiver GAIN control - Preset
(pushed in) position.
c.
Antenna TILT angle control - +15
degrees.
d.
Weather (WX) pushbutton selector
switch (display controller) - Depress to
select weather display mode on the
EHSI.
e.
Radar mode selector switch - SBY or
TEST.
NOTE
When power is first applied, the radar will be in
the wait mode for 45 seconds to allow the
magnetron to warm up.
f.
RADAR mode selector switch - WX or
GMAP.
g.
Range switches - As required.
Satisfactory operation of the weather
radar shall be verified using 5, 25,
4-22
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