As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6532 - ORD-IAD - ABORTED TAKEOFF DUE TO LEFT RED BETA LIGHT ILLUMINATED. AIRCRAFT RETURNED TO THE GATE WITH NO FURTHER PROBLEMS. MAINTENANCE REMOVED AND REPLACED BETA PRESSURE SWITCH. OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)