As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAD - DURING MAINTENANCE TAXI, CREW NOTICED EMERGENCY TRACK LIGHTING INOP. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND RESECURED ELECTRICAL CONNECTION, OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)