Cessna 172R Operating Handbook page 448

SECTION 9 SUPPLEMENTS
-
SUPPLEMENT 15
If red "P R" light is
switch for 5
failed.
AUTOPILOT Circuit Breaker is pulled
position until repairs can be made.
d. RH SWITCH
seconds. OBSERVE NO MOVEMENT of Elevator Trim
Wheel. Verify red "P R" light above AP button. Release
switch
e. LH
SIMULTANEOUSLY
MOVEMENT of Elevator Trim Wheel in proper direction
(nose down).
forward,
OBSERVE NO MOVEMENT of Elevator Trim Wheel.
Continue
RELEASE A/P DISC/TRIM INT Switch.
MOVEMENT of Elevator Trim Wheel in proper direction.
Release LH and RH Switches
During Steps
trim tab
move up for nose down trim).
Elevator Trim Wheel is observed while the A/P
DISC/TRIM INT Switch is pressed, the manual
electric trim
continued
pulled
to the
LH and RH Switch
f.
and HOLD. OBSERVE MOVEMENT of Elevator Trim
Wheel in proper direction (nose up). While holding LH
and RH Switches aft, PRESS and HOLD A/P DISC/TRIM
INT Switch.
Trim Wheel. Continue
and RELEASE A/P DISC/TRIM INT Switch. OBSERVE
MOVEMENT of Elevator Trim Wheel in proper direction.
Release LH and RH Switches to center OFF position.
S15-20B
APPROVED
FAA
-
NOTE
not
seconds, the trim monitor system has
The flight may
PULL AFT
-
OFF position.
to center
RH Switch
and
While holding LH
PRESS and HOLD A/P DISC/TRIM INT Switch.
LH and RH Switches forward and
to hold
NOTE
e. and
f., verify movement of elevator
in proper direction (the elevator trim
has failed. The flight may be
system
if the AUTOPILOT Circuit
OFF position until repairs
OBSERVE NO MOVEMENT of Elevator
observed after holding RH
be continued if the
UP position and hold for 5
to
PUSH
-
and
HOLD.
to center
If movement of
can be made.
PULL AFT SIMULTANEOUSLY
-
hold LH and RH Switches aft
to
CESSNA
MODEL 172R
the OFF
to
FORWARD
OBSERVE
and RH Switches
OBSERVE
OFF position.
tab will
Breaker is
Revision 1