As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE, THE NR 1 ENGINE TORQUE GAUGE DROPPED TO ZERO AND DIGITAL GAUGE READ DASHES FOR 2 OR 3 SECONDS ACCOMPANIED BY THE NR 1 ENGINE SURGING AND CAUTION LIGHTS ILLUMINATING. CREW WAS UNSURE WHICH CAUTION LIGHT. CREW WAS UNSURE IF TORQUE OR NP CHANGED. AIRCRAFT DIVERTED TO BWI AND LANDED NORMALLY. ENGINE EEC WAS CHANGED BY MAINTENANCE AND AIRCRAFT WAS RUN UP AND ENGINE TRIMMED IAW MM PROCEDURES. ALL CHECKS WERE GOOD AT THIS TIME AND AIRCRAFT WAS RELEASED FOR SERVICE.