TM 1-1510-224-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
PRIOR TO MAINTENANCE TEST FLIGHT (CONT)
(1)
Control wheel - Move aft of
mid-travel. Trim wheel should
run
nose
down
after
approximately
3
seconds.
TRIM
DN
annunciator
(autopilot controller) should
illuminate after approximately
6 to 8 seconds, and AP TRIM
annunciator
(instrument
panel) should illuminate after
approximately 15 seconds.
(2)
Control wheel - Move forward
of mid-travel. Trim wheel
should run nose up after
approximately
3
seconds.
TRIM
UP
annunciator
(autopilot
controller)
check
illuminated
after
approximately 6 to 8 seconds.
AP
TRIM
annunciators
(instrument
panel)
check
illuminated
after
approximately 15 seconds.
(f)
AP & YD/TRIM DISC switch (control
wheel) - Depress to first level.
Check
that
autopilot
and
yaw
danger disengage. AP ENGAGE
and YD ENGAGE switch-indicators
on the autopilot controller and
remote
annunciators
above
the
EADI’s flash 5 times.
(g)
Control wheel - Hold to mid-travel.
(h)
AP ENGAGE switch - Re-engage.
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