As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT 913 ON FLIGHT 5109 CLT TO HKY. DURING CLIMBOUT FROM CLT THE LEFT ENGINE TORQUE INDICATION WENT TO ZERO. ALL ENGINE INDICATIONS WERE NORMAL. NO INFLIGHT EMERGENCY WAS DECLARED. AIRCRAFT RETURNED TO CLT AND LANDED WITH NO OTHER PROBLEMS. MAINTENANCE CHANGED THE SIGNAL CONDITIONER HOOKUP FROM BRIDGE NR 2 TO BRIDGE NR 1. GROUND RUN WAS PERFORMED. ALL SYSTEMS CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE.