Cessna SkyHawk SP 172S NAV III 2005 Pilot Operating Handbook page 352

CESSNA
MODEL 172S NAV '"
SECTION 9 - SUPPLEMENTS
SUPPLEMENT 3
NORMAL PROCEDURES
(Continued)
4. MANUAL ELECTRIC TRIM (MET) SYSTEM - TEST (Using
the ON - UP Switches on the outboard side of the LH
control wheel):
a. LH Switch - PUSH FORWARD to ON position and hold.
MONITOR elevator trim wheel for movement. If elevator
trim wheel moves, MET system has failed. Release
switch to center OFF position.
NOTE
Any movement of the elevator trim wheel during the
check of either the LH or RH Switch means that the
Manual Electric Trim System has failed. The airplane
may be flown if the AUTO PILOT Circuit Breaker is
secured in the open position so that the autopilot is
disconnected from electrical power and will not
operate until it is repaired.
b. LH SWITCH - PULL AFT to UP position and hold. Make
sure that the elevator trim wheel does not move.
Release switch to center OFF position.
c. RH Switch - PUSH FORWARD to ON position and hold.
Make sure that the elevator trim wheel does not move.
Make sure the red light on the face of autopilot
comes on. Release switch to center OFF position.
NOTE
p
If red
T
light is not shown on the face of the autopilot
after the RH Switch is held in the ON position for 5
seconds, the Trim Monitor System has failed. The
airplane may be flown if the AUTO PILOT Circuit
Breaker is secured in the open position so the
autopilot is disconnected from electrical power and
will not operate until until it is repaired.
(Continued Next Page)
FAA APPROVED
172SPHAUS-S3-00
U.S. S3-23