As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EWR - FLT 4503 - DURING PREFLIGHT, CREW REPORTED ALL THE EMERGENCY LIGHTS TO BE INOPERATIVE. AIRCRAFT WAS INSPECTED AND FERRIED TO BOS FOR REPAIR. MAINTENANCE COLD NOT DUPLICATE DISCREPANCY AFTER AIRCRAFT LANDED IN BOS. SUSPECT BATTERIES CHARGED DURING FLIGHT. NO PARTS WERE CHANGED AND AIRCRAFT WAS RETURNED TO SERVICE. (M)