What was found
DURING TAKEOFF, AUTO-FEATHER DID NOT ARM. AIRCREW PERFORMED AUTO-FEATHER TEST ON ENGINE RUN-UPS. SYS PERFORMED SATISFACTORY. AIRCREW ATTEMPTED TAKEOFF ONCE MORE, TAKEOFF WAS ABORTED DUE TO SUSPECTED NR 1 ENGINE AUTO-FEATHER, NR 1 TORQUE DROPPED TO 80 PERCENT, THEN NR 1 PROP SPEED DROPPED TO 400 RPM. AFTER THE PROP RPM DROPPED, THE NR 1 ENGINE TORQUE JUMPED. GROUND MX CREW CLEANED AND RESEATED CONNECTOR PLUGS ON THE NR1 TSCU, THEN PERFORMED GROUND RUNS. SYS CHECKED SATISFACTORY. ACFT WAS RELEASED FOR A TEST FLIGHT WHICH RESULTED SATISFACTORY. AFTER TEST FLIGHT, THE ACFT WAS RELEASED TO FLIGHT STATUS.