As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6348 - IAD-GSO - DURING TAKEOFF, AIRCRAFT ABORTED TAKEOFF DUE TO RIGHT BETA WARNING LIGHT ILLUMINATED. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND REMOVED AND REPLACED BETA PSI SWITCH, OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)