TM 1-1510-233-CL
P-10
5.
Elevator trim follow-up – Check as follows:
a. Control wheel – Move aft of mid-travel. Trim
wheel should run nose down after approxi-
mately 3 seconds. TRIM DN annunciator
(autopilot controller) should illuminate after
approximately 6 to 8 seconds and AP TRIM
annunciator (instrument panel) should illu-
minate after approximately 15 seconds.
b. Control wheel – Move forward of mid-trav-
el. Trim wheel should run nose up after
approximately 3 seconds. TRIM UP annun-
ciator (autopilot controller) should illumi-
nate after approximately 6 to 8 seconds,
and AP TRIM annunciator (instrument pan-
el) should illuminate after approximately 15
seconds.
6.
AP & YD/TRIM DISC switch (control wheel) –
Depress to first level. Check that autopilot and
yaw damper disengage, AP ENGAGE and YD
ENGAGE switch-indicators on the autopilot
controller and remote annunciators above the
EADI’s flash 5 times.
7.
Control wheel – Hold to mid-travel.
8.
AP ENGAGE SWITCH – RE-ENGAGE.
9.
Turn knob – Check that elevator control trim
wheel follows in each applied direction, then
center.
10. Pitch wheel – Check that trim responds to pitch
wheel movements. (UP TRIM and DN TRIM
annunciators may illuminate).
11. Heading marker – Center and engage HDG.
Check that control wheel follows a turn in each
direction.
