TM 55-1510-215-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
DURING CRUISE (CONT)
b.
Channel selector - Set test
K50
channel. Station should be near enough to
provide reliable signal and direction to the
station should be known: Verify station
identification (audio).
c.
Verify that RMI's indicate bearing to
station.
d.
COURSE select knob (HSI) -
K48,K49
Rotate
until course arrow
indicates bearing shown on RMI (c.
above).
e.
Verify that HSI course deviation bar is
centered, TO/FROM indicator reads TO,
GS OFF flags are visible and NAV
warning flags are hidden from view. Also
verify that DME indicators display correct
range, speed and time to station.
f.
COURSE select knob (HSI) - Rotate until
course arrow indicates RMI reciprocal
bearing.
g.
Verify that HSI course deviation bar is
centered and TO/FROM indicator reads
FROM.
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