CESSNA SECTION 3
MODEL T182T NAV III EMERGENCY PROCEDURES
GFC 700 AFCS
U.S.
ROUGH ENGINE OPERATION OR LOSS OF POWER
SPARK PLUG FOULING
A slight engine roughness in flight may be caused by one or more spark
plugs becoming fouled by carbon or lead deposits. This may be verified
by turning the MAGNETOS switch momentarily from BOTH to either L
or R position. An obvious power loss in single magneto operation is
evidence of spark plug or magneto trouble. Since spark plugs are the
more likely cause, lean the mixture to the recommended lean setting for
cruising flight. If the problem does not clear up in several minutes,
determine if a richer mixture setting will produce smoother operation. If
not, proceed to the nearest airport for repairs using the BOTH position
of the MAGNETOS switch unless extreme roughness makes the use of
a single MAGNETO position necessary.
MAGNETO MALFUNCTION
Sudden engine roughness or misfiring is usually a sign of a magneto
problem. Changing the MAGNETOS switch from BOTH to the L and R
switch positions will identify which magneto is malfunctioning. Select
different power settings and enrichen the mixture to determine if
continued operation on BOTH magnetos is possible. If not, change to
the good magneto and continue to the nearest airport for repairs.
ENGINE-DRIVEN FUEL PUMP FAILURE
Failure of the engine-driven fuel pump will be shown by a sudden
reduction in the fuel flow indication (FFLOW GPH) immediately before
a loss of power while operating from a fuel tank containing adequate
fuel.
If the engine-driven fuel pump fails, immediately set the FUEL PUMP
switch to the ON position to restore the engine power. The flight should
be terminated as soon as practical and the engine-driven fuel pump
repaired.
(Continued Next Page)
T182TPHBUS-00
3-33
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