As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAD/GSO - FLT 6321 - DURING CRUISE AT 1100 HOURS ON 4-23-97, MADE AN UNSCHEDLED LANDING AT CMH DUE TO RT PROP HEAT FAILED. AIRCRAFT WENT TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND REMOVED AND REPLACED DEICE MAT, OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (X)