TM 55-1510-219-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
f. Autopilot - Engage. Check that controls
are stiff and that AP ENG, HDG, and
AIL HI TORQUE annunciator lights
illuminate.
g. AIL HI TORQUE test switch -TEST.
Check that AIL HI TORQUE light
extinguishes.
h. HSI heading marker - Move 10° left and
right and verify that flight director and
control
wheels
respond
in
the
appropriate direction.
i. Autopilot/yaw damp disengage switch
(control wheels) - Press to first detent
and verify that autopilot disengages (AP
DISC annunciator illuminates) and
that flight controls are free.
j. Autopilot - Engage.
k. Autopilot pitch-turn control (pedestal
extension) - Command 5° trim UP and
verify that manual trim wheel moves
nose up and AP trim light indicates UP
trim.
l. Pitch trim switch (control wheels) -
Command nose down and verify that
autopilot disengages and AP TRIM
FAIL
and
MASTER
WARNING
annunciator lights illuminate.
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