Dash 8-200
Maintenance Powerplant
Aircraft Equipment Problem Critical
General Maintenance Action
Procedure
Aircraft returned to field for #1 engine feathering uncommanded on take-off. The discrepancy occurred at XA:30 and when I came on duty at XJ:00 I called maintenance for an update. They reported that they inspected #1 engine wire harness; PLA (Power Level Angle); CLA (Condition Lever Angle) micro switches and replaced the #2 TSCU (Torque Signal Conditioning Unit) and ops check was satisfactory. I entered the data into our operating system. This same issue reoccurred on a later date.
Maintenance Technician reported that a Dash-8-200's propeller auto-feathered on takeoff. Following maintenance action the problem reoccurred on a later date.