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 TM 55-1510-218-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
AVIONICS FLIGHT CHECKS (CONT)
r. Weather observation proce-
dure:
(1) Antenna tilt control - Ad-
just until weather pattern
is displayed. Include the
areas above and below the
rainfall areas to obtain a
complete display.
(2) Mode switch - As re-
quired.
(3) GAIN control - Rotate
counterclockwise until
dark holes begin to disap-
pear. Less intense targets
will disappear first.
*19. Radar set (APN-215(V)).
K30-39
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 -
OFF.
(5) TILT control - Move up
or down to observe targets
above or below aircraft.
4-38
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