TM 1-1510-218-CL
P-5
8. Press AP/YD disengage switch to first detent and
verify that autopilot disengages and flight controls
are free – Check.
9. Elevator Trim – Check on.
10. Engage autopilot – Check.
11. Command 5° trim UP with AP pitch wheel and
verify that manual trim wheel moves nose UP and
AP trim light indicates UP trim – Check.
12. Press PITCH TRIM switch NOSE DN and verify
that autopilot disengages and AUTO PILOT
TRIM FAIL and MASTER WARNING lights
illuminate – Check.
NOTE
The
AP
TRIM
FAIL
annunciator
will
extinguish by pressing the AP/YD disconnect
button on the control wheel to the first
detent.
13. Engage autopilot – Check.
14. Move HSI heading marker to command a bank on
FD – Check.
15. Press go-around switch and verify that GA light
illuminates, autopilot disengages, and that FD
commands a wings level, 7° nose-up attitude
Check.
16. Press TEST switch (pilot's HSI) and verify that
attitude display indicates an additional 10° pitch
up and 20° right bank – Check.
AUTOPILOT TRIM FAIL SYSTEM C D1
1. Engage autopilot command DN with AP pitch
wheel and engage AUTO PILOT TRIM TEST
switch when elevator trim wheel starts to rotate.
