Cessna 208B - Page 85

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SECTION 3 CESSNA ,-
EMERGENCY PROCEDURES
MODEL
2088 (675 SHP)
ENGINE FAILURE (Continued)
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A flameout may result from the engine running out of fuel, or possibly
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mav be caused bv unstable engine operation. Unstable engine
operation such as a'compressor suFge (possibly due to a bleed valve
malfunction)
mav be ident:fiable by an audible popping noise jusr
before flameout. Once the fuel
suppiy has been restored to the engine
or cause of unstable engine operation eliminated, the engine may be
restarted.
The best
airstart technique is to initiate the relight procedures
immediately after a flameout occurs, provided the pilot is certain that
the flameout was not the result of some malfunction that might make
it
hazardous to attempt a relight. Regardless of airspeed or altitude, there
is always the possibility that the engine may light up successfully just
as soon as the ignition is turned on. In an emergency, turn on the
ignition just as soon as possible after flameout, provided the gas
generator speed has not dropped below 50%. Under these
circumstances, it is not necessary to shut off the fuel or feather the
propeller. the power lever, however, should be retarded to IDLE
position.
If a flameout has occurred and the gas generator speed has dropped
below
50%, the fuel condirion lever should be moved ro the CUTOFF
position before an
airstart is attempted.
CAUTION
THE PILOT SHOULD DETERMINE THE REASON FOR
POWER LOSS BEFORE ATTEMPTING AN AIRSTART.
Propeller feathering is dependent on circumstances and is at the
discretion of the pilot. However, if engine oil pressure drops below
15psi, the propeller should be feathered.
If an
airstart is to be attempted, follow the checklist procedures. The
Starter Assist procedure is preferred since it results in cooler engine
starts. successful airstarts (with starter assist) may be achieved at all
airspeeds normally flown and up to an altitude of 14,000 feet. However,
above 14,000 feet, or with the gas generator RPM below
lo%, starting
temperatures tend to be higher and caution is required.
(Continued Next Page)
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1 3-30 U.S.
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Revision 23