As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6323 - IAD-RDU - DURING TAKEOFF, EXPERIENCED A RED BETA LIGHT ON TAKE ROLL. TAKEOFF WAS ABORTED AND AIRCRAFT RETURNED TO THE GATE WHERE MAINTENANCE WAS NOTIFIED OF THE DISCREPANCY. MAINTENANCE WAS DISPATCHED TO THE AIRCRAFT AND THROUGH PROPER T/S PROCEDURES FOUND THE PRESSURE SWITCH HAD FAILED. THE BETA PRESSURE SWITCH WAS REPLACED AND GROUND RUNS PERFORMED. AIRCRAFT WAS THEN RELEASED FOR SERVICE. (M)