Sling 4 TSi
Section 7
Pilot Operating Handbook
Aircraft and Systems
Document Number: DC-POH-001-X-F-3.0
Page | 7-10
Revision: 3.0
Date: 2021/07/14
7.3.2.1
Operation of the propeller controls
•
The power switch, labelled
PROP
, located on the instrument
panel. This switch activates/deactivates the power supply to the
propeller control unit and propeller pitch adjustment motor.
•
Automatic/Manual
[AUTO/MAN]
selector switch, located on the
propeller controller, changes the propeller mode between
automatic and manual.
o
AUTO
– Automatic mode operation allows constant speed
governing in pre-set modes i.e. Take-off, climb, cruise and
hold.
o
MAN
– manual mode operation allows direct control over
the propeller pitch, allowing the propeller to become a
more traditional in-flight variable pitch propeller.
•
Propeller control selector
, the blue rotary knob, allows the pilot
to change between pre-set propeller settings. This knob has no
effect when manual [MAN} is selected on the automatic/manual
selector switch. These pre-set setpoints are:
o
T.O.
– Use for take-off and landing.
o
CLIMB
– Use for climbing and any other operations where
continuous high-power settings are required.
o
CRUISE
– Use for cruise and normal operation.
o
HOLD
– Use for constant speed governing at a pilot selected
speed not a part of the options above.
•
Feather engage switch
is active when the AUTO mode is selected
on the automatic/manual selector switch, and the propeller
control selector is set to FEATHER. Engaging this switch will
initiate the automatic feathering of the propeller.
