CESSNA
MODEL 182T NAV
Ill
SECTION 3
EMERGENCY PROCEDURES
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 engine power.
should be terminated as soon as practical and the engine-driven
fuel pump repaired.
The
flightl
(Continued Next Page)
U.S. 3-31
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