TM 55-1510-220-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
F.
AVIONICS FLIGHT CHECKS (CONT)
c.
Test procedure: Observe screen for proper display. Test display consists of two green, two yellow,
and a red band on a 120° scan. The word TEST will be displayed in upper right corner. Operating
mode selected by MODE switches (either MAP, WX, or WXA) has been displayed in lower left
corner. If WXA has been selected, red band in the test pattern will flash on and off. Range will be
displayed in upper right corner beneath TEST and appropriate range mark distances will appear
along right edge of the screen. Complete test patterns may be seen only on 80 mile range or
higher. Flying level at an altitude of 8,000 to 10,000 feet will allow mapping of ground targets to a
range of approximately 100 miles.
d.
Antenna stabilization check:
4-36
