As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAD-JFK - FLT 6305 - DURING CRUISE, AIRCRAFT MADE AN UNSCHEDULED LANDING AT IAD DUE TO ELECTRICAL PROBLEM ON THE NON ESSENTIAL BUS POWER WAS INTERMITTENT. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND REMOVED AND REPLACED RT PDU, OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)