Cessna 208B - Fuel Condition Lever; Propeller Control Lever

CESSNA SECTION 7
MODEL 208B (675 SHP) AIRPLANE AND SYSTEMS DESCRIPTION
ENGINE (Continued)
Airplane incorporating
Service Kit SK208-142, have a copper witness
1 wire installed that indicates when the emergency power lever (EPL) has
been moved from the NORMAL position. In the event that the
emergency power lever is required due to an engine malfunction,
moving the emergency power lever out of the NORMAL position and
into the IDLE position easily breaks the copper wire.
Afler EPL use, the witness wire should be replaced afler appropriate
maintenance action. An
entry shall be made in the airplane logbook
indicating the circumstances of the EPL use and the action taken.
PROPELLER CONTROL LEVER
The propeller control lever is connected through linkage to the propeller
governor mounted on top of the front section of the engine, and
controls propeller governor settings from the maximum RPM position to
full feather. The propeller control lever has MAX, MIN, and FEATHER
positions. The
MAX position is used when high RPM is desired and
governs the propeller speed at 1900 RPM. Propeller control lever
settings from the MAX position to MIN permit the pilot to select the
desired engine RPM for cruise. The FEATHER position is used during
normal engine shutdown to stop rotation of the power turbine and front
section of the engine. Since lubrication is not available afler the gas
generator section of the engine has shut down, rotation of the
foward
section of the engine is not desirable. Also, feathering the propeller
when the engine is shut down minimizes propeller windmilling during
windy conditions. A mechanical stop in the lever slot requires that the
propeller control lever be moved to the lefl to clear the stop before it
can be moved into or out of the FEATHER position.
FUEL CONDITION LEVER
The fuel condition lever is connected through linkage to a combined
lever and stop mechanism on the fuel control unit. The lever and
Stop
also function as an idle stop for the fuel control unit rod. The fuel
condition lever controls the minimum RPM of the gas generator turbine
(Ng) when the power lever is in the IDLE position. The fuel condition
lever has CUTOFF, LOW IDLE, and
HlGH IDLE positions. The
CUTOFF position shuts off all fuel to the engine fuel nozzles. LOW
IDLE positions the control rod stop to provide an RPM of 52% N
HlGH
IDLE positions the control rod stop to provide an RPM of 65% di.
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