Pilot’s Operating Handbook Section 7
EXTRA 500 Description of Airplane and Systems
(zero servo pressure). This allows counterweight and spring
forces to increase blade pitch until the feathering stop is reached
and propeller rotation is stopped.
In the
FUEL ON position the fuel flow to the engine is opened.
In addition the pilot valve is closed giving propeller pitch
control to the Propeller governor assembly for flight regimes
respective to the beta valve for ground idle and reverse thrust
range.
Advancing the condition lever further forward up to the
MAX
PROP RPM
position continuously increases the prop-rpm from
1900 to 2030 rpm.
A mechanic lock avoids inadvertent engine shutdown in flight.
The lever has to be lifted before it can be retarded below the
FUEL ON position.
Power lever
Condition lever
Gear warning mute
Pitch trim wheel
Pitch trim
indication
Figure 7-10
Engine Control Unit
26. January 2011 7-29
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