As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAD/EWR - FLT 6150 - DURING TAXI AT 0720 HOURS ON 8-7-97, RETURNED TO GATE DUE TO RT PACK OVERTEMP WARNING LIGHT ILLUMINATED. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND FREED ACM, OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (X)