TM 1-1510-224-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
NOTE
The control wheel must be held at mid-travel due to
ballast in the elevator. The autopilot will disconnect
during pitch wheel check due to the heavy nose
down force if the control wheel is not off the forward
stop.
(4)
Control wheel - Move to mid-
travel.
(5)
AP ENGAGE switch-indicator
(autopilot
controller)
-
Depress to engage autopilot
and yaw damper. Check that
AP
ENGAGE
and
YD
ENGAGE switch-indicators on
autopilot
controller
and
remote
annunciators
on
instrument
panel
on
illuminated.
(d)
Autopilot overpower check - Check
as follows:
(1)
Rudder pedals - Overpower
slowly.
(2)
Control wheel - Overpower
slowly in both directions.
WARNING
If the autopilot or yaw damper disengages during the
overpower
test,
the
system
is
considered
nonoperative and should not be used. The elevator
trim system must not be forced beyond the limits
which are indicated on the elevator trim indicator.
(e)
Elevator trim follow-up - Check as
follows:
2-15
