As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF FROM, THE NR1 ENGINE TORQUE DROPPED, THEN SUFFERED A POWER LOSS. AIRCREW SHUTDOWN THE NR 1 ENGINE, NOTIFIED ATC OF THE MALFUNCTION, AND DECLARED AN EMERGENCY. ACFT RETURNED TO FIELD SAFELY. MX R & R THE NR 1 TSCU (TORQUE SIGNALING CONDITIONING UNIT). PERFORMED ENGINE RUNS AND CHECKED SATISFACTORY. ACFT WAS RELEASED FOR A TEST FLIGHT WHICH RESULTED SATISFACTORY. ACFT RETURNED TO FLIGHT STATUS.