TM 55-1510-215-MTF
(6)
Arm and alert annunciator lights (altitude selector panel) -
Check illuminated.
(7)
Computer flag (pilot's flight director control-indicator) -
Check in view.
(8)
Manual electric trim system - Check as follows:
(a)
Electric trim switch (pilot's control wheel) - Move the
left side of the trim switch to the forward and aft
position, while moving the pitch-trim control wheel.
The pitch-trim solenoid should engage making it more
difficult to move the pitch-trim control wheel, but the
electric trim motor should not run. Move the right side
of the trim switch to the forward and aft positions.
The pitch-trim solenoid should not engage and the
electric trim motor should not run.
(b)
Overpower capability - Check by moving the pilot's
electric trim switch to the forward and aft positions
while holding the manual pitch-trim control wheel.
(c)
Trim test switch (pedestal extension) - Depress and
hold then run the electric trim up and down using the
pilot's electric trim switch (control wheel).
(d)
Trim annunciator light (autopilot annunciator panel) -
Check illuminated.
(e)
Aural trim alert- Listen for sound.
(f)
Autopilot disconnect/trim interrupt switch (control
wheel) - Depress and hold then attempt to run the
electric trim up and down using the pilot's electric trim
switch (control wheel). The trim system should not
run either up or down.
4-4
