Cessna 172SPHUSR05 Pilot Operating Handbook page 411

C ESSNA
MODEL 1 72S
Upon applying power to the autopilot, the red P
warni ng on the face of the autopilot may illuminate
indicating that the pitch axis cannot be engaged.
This condition
approximately 30 seconds.
and normal operation will be available.
I F PITCH TRIM LIGHT STAYS ON, THEN THE
AUTOTRIM DID NOT PASS PREFLIGHT TEST.
THE AUTOPILOT CIRCUIT B R EAKER MUST B E
PULLED. MANUAL ELECTRIC TRIM A N D AUTO­
PILOT ARE INOPERATIVE.
3. MANUAL E LECTRIC TRIM -- TEST as follows :
a. LH SWITCH -- PUSH FORWARD to O N position and hold.
OBS ERVE NO MOV E M E NT of Elevator Trim Wheel.
Release switch to Center OFF Position.
If movement of the elevator trim wheel is observed
duri ng a check of either LH or RH Switch, the
m anual electric trim system has malfunctioned. The
flight may be conti nued if the AUTO P I LOT Circuit
Breaker is pulled to the OFF position and secured
until repairs can be made.
b . LH SWITCH -- P U LL A FT to UP position and hold.
OBSERVE NO MOVEM ENT of the Elevator Trim Wheel .
Release switch to center OFF positio n .
c. R H SWITCH -- PUSH FORWARD t o ON position and
hold for 5 seconds .
Elevator Trim Wheel.
button. Release switch to center OFF position .
Revision 3
S U P P L E M E NT 1 5 - FAA APPROVED
NOTE
should be
The P will extinguish
A
WARNING
NOTE
OBSE RVE N O MOVEMENT of
Verify red
(Continued Next Page)
S ECTION 9 - SU PPLEM E NTS
temporary, lasting
lip
R" light above AP
I
S 1 5-20A