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
REFERENCE
G. AVIONICS FLIGHT CHECKS (CONT)
be interrogated and that the
reply be checked for satisfac-
tory response.
*13.
Encoding altimeter - Check as fol-
lows:
a. Mode C switch (transponder
control panel) - ON.
b. Contact ground radar facility
and request them to give you
their
altitude
readout.
Ground facility altitude read-
out must agree with aircraft
altitude within ±200 feet.
*14
Radar set - Check while airborne
as follows:
a. Turn on procedure: Function
switch - TEST (information
will appear after time delay
period).
b. Initial adjustments:
(1) BRT control - As re-
quired.
(2) MODE switches - As re-
quired.
(3) RANGE switches - 80.
(4) 120/60° degree button -
120°.
(5) TILT control - Move up
or down to observe targets
above or below aircraft.
Echo display will change
in shape and location
only. Weather targets will
4-34
K30-39
