Sling 4 TSi
Section 7
Pilot Operating Handbook
Aircraft and Systems
Document Number: DC-POH-001-X-F-3.0
Page | 7-12
Revision: 3.0
Date: 2021/07/14
7.3.2.2
Indicator Lights
Information conveyed to the pilot by the propeller system is through
three lights located on the propeller controller, namely Coarse, Fine
and Feather indicators lights. The following table lists the various
propeller status indications provided by the lights.
Indicator Light
Propeller Status
FINE
Orange
Pitch decreasing
Orange Flashing
No speed signal
Green
Fine pitch limit
Green Flashing
Pitch motor engaged at fine pitch limit
Red
Over-current while pitch decreasing
COARSE
Orange
Pitch increasing
Green
Coarse pitch limit
Green Flashing
Pitch motor engaged at coarse pitch limit
Red
Over-current while pitch increasing
FEATHER
Orange
Pitch Increasing in Feather
Green
Feather pitch limit
Green Flashing
Pitch motor engaged at feather pitch limit
Red
Over-current while pitch increasing in
feather
ALL
Red Flashing
Open circuit failure
Rapid-Red Flashing Controller software fault
When the propeller is in manual mode, many of the indicator lights will
still operate.
