As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6332 - IAD-PIT - DURING TAXI, EXPERIENCED A DISCREPANCY WITH THE CABIN EMERGENCY LIGHTS NOT STAYING ILLUMINATED FOR MORE THAN 4 SECONDS. AIRCRAFT RETURNED TO THE GATE WHERE MAINTENANCE REMOVED AND REPLACED THE UPPER AFT, UPPER FORWARD, AFT NR 1 AND AFT NR 2 EMERGENCY BATTERIES IAW THE PROCEDURES AS OUTLINED IN THE MM. MAINTENANCE PERFORMED THE REQUIRED TESTS AS STATED IN THE MM. AIRCRAFT WAS THEN RELEASED FOR SERVICE. (M)