What was found
FLIGHT CREW REPORTED THAT THEY HAD AN UNSCHEDULED FEATHER AT 2000 FEET. ECU FLICKERED 3 TIMES THEN TORQUE WENT TO 125 FOR 3 TO 5 SECONDS. MX CREW R & R THE ECU AND TSCU AND PERFORMED ALL GROUND RUNS AND TEST FLIGHT WERE SATISFACTORY FDR WILL BE DOWN LOADED AT NEXT EARLIEST CONVENIENCE FOR POSSIBLE OVERTORQUE. FDR WAS READ THEN NR 1 TSCU WAS CHANGED FOR UNSCHEDULED FEATHER. PERFORMED ALL NECESSARY OPS, CHECKS WERE SATISFACTORY ACFT WAS RETURNED TO SERVICE.