TM 1-1510-224-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
WARNING
Operation of the electric trim system should occur
only by movement of pairs of switches. Any
movement
of
the
elevator
trim
wheel
while
depressing only one switch element indicates a trim
system malfunction. The electric elevator trim
control switch must then be turned OFF and flight
conducted by operating the elevator trim wheel
manually. Do not use autopilot.
(3)
Pilot and copilot trim switches-
Check individual elements for no
movement
of
trim,
then
check
proper operation of both elements.
(4)
Pilot trim switches - Check that pilot
switches override copilot switches
while
trimming
in
opposite
directions,
and
trim
moves
in
direction commanded by pilot.
(5)
Pilot or copilot trim disconnects
while activating pilot or copilot trim
disconnect switches
(6)
ELEV TRIM switch - OFF the on
(ELEC
TRIM
OFF
annunciator
extinguishes).
34.
ASE/ACS - Perform BIT checks as required.
(a)
UTIL on MFD - Depress.
(b)
System BIT (R1) - Depress.
2-19
