SOLOY TURBINE PAC SECTION 7
POHS CESSNA T206H/206H AIRPLANE & SYSTEMS
DESCRIPTION
7-13
F.A.A. Approved May 23, 2003
An auto feathering system provides for automatic reduction in propeller
RPM in the event of the loss of engine power. This system is not a
total feathering device. It is intended to reduce propeller drag due to
an engine failure. The system is controlled by a pressure sensor that
automatically reduces the propeller RPM (N
P
) to 1450 RPM with the
propeller overspeed governor if the engine torquemeter oil pressure
drops below 4 PSI. An AUTO FEATHER annunciator light will
illuminate when the system is operating. To ground test the system,
check that the AUTO FEATHER annunciator light is ON prior to
starting the engine. This checks that the pressure sensor is operating.
A test button is also provided to check the auto feather solenoid and
propeller overspeed governor. With the power set at 1600 propeller
RPM (N
P
), press the test button. Propeller RPM (N
P
) will drop to 1450
RPM and the auto feather annunciator light will illuminate. Also, due to
the oil being dumped from the propeller system, an OIL PRESS LOW
light will illuminate.
CAUTION
DUE TO THE INCREASE IN THRUST
CAUSED BY THE PROPELLER
CHANGING PITCH DURING THE AUTO
FEATHER TEST, EXTREME CARE
SHOULD BE USED IF THE GROUND IS
COVERED WITH ICE OR SNOW.
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