As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6391 - IAD-CHO - DURING CRUISE, EXPERIENCED A FLUCTUATION OF THE RT EGT AND TQ INDICATIONS. AIRCRAFT RETURNED TO IAD WITH NO PROBLEM. AIRCRAFT TAXIED TO THE GATE WHERE MAINTENANCE CONTROL WAS NOTIFIED. MAINTENANCE WAS DISPATCHED TO THE AIRCRAFT AND REMOVED AND REPLACED THE RT ENGINE TTL VALVE. ALL REQUIRED CHECKS WERE ACCOMPLISHED AND THE AIRCRAFT WAS RELEASED FOR SERVICE. (M)