TM 55-1510-221-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
G. AVIONICS FLIGHT CHECKS (CONT)
(9)
If the terrain band shifts to the right
around
the
second
range
marks,
increase tilt angle using TILT control
until pattern is displayed throughout the
third range marks Note new position of
TILT control It should not be more than
two degrees above that noted in step
(5).
(10) If the terrain band shifts (in step 8) to
the left around the second range marks,
decrease tilt angle using TILT control
until pattern is displayed throughout
the third range marks Note new position
of TILT control. It should not be more
than two degrees below that noted in
step (5).
(11) If the differences between steps (10)
and (5) or steps (9) and (5) are greater
than
two
degrees,
recalibrate
roll
stabilization circuitry to the gyro using
the following procedure.
(a)
Reset the TILT control under the
flight conditions of step (5) with
stab on Then roll the aircraft 20°
right.
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