As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING B INSPECTION, FOUND THE LAST 3 FLOOR EMERGENCY LIGHTS INOPERABLE. THE ACFT WAS REMOVED FROM SERVICE. R & R WITH NEW AND SERVICEABLE NR 4 BATTERY AND POWER SUPPLY IAW AMM 33-50-04. THE OPS CHECK WAS GOOD. THE ACFT WAS RETURNED TO SERVICE.