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 TM 1-1510-223-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
PRIOR TO MAINTENANCE TEST FLIGHT (CONT)
(4) APFTRIM annunciators (instrument
panel, above EADI's) - Check
illuminated after approximately 15
seconds.
(5) Control wheel - Hold forward of mid
travel.
(6) Trim wheel (autopilot controller) -
Should run nose up after approximately
3 seconds.
(7) TRIM
UP
annunciator
(autopilot
controller) - Check illuminated after 6 to
8 seconds.
(8) AP/TRIM annunciators (instrument
panel, above EADI's) - Check
illuminated after approximately 15
seconds.
(9) AP & YDITRIM DISC switch (control
wheel) - Depress to first level to
disengage the autopilot/yaw damper.
l.
Autopilot overpower check - Perform as
follows:
(1) AP ENGAGE switch-indicator (autopilot
controller) - Depress to engage
autopilot and yaw damper. Check that
AP ENGAGE and YD ENGAGE switch-
indicators on the autopilot controller
and the remote annunciators on the
instrument panel are illuminated.
(2) Control wheel - Slowly overpower
autopilot in pitch and roll axis.
2-22
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