As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 TORQUE GAUGE WENT FROM 92 PERCENT TO ZERO. POWER UPTRIM WAS CYCLING ON AND OFF. REMOVED AND REPLACED NR 1 ECU, TSCU, AND TORQUE PROBE. GROUND RUN AND TEST FLIGHT PROVED SATISFACTORY. A/C RETURNED TO SERVICE. REFERENCE: OPERATOR CONTROL NR. 96ZZZX5928 AND 96ZZZX5929. (X)