As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A MX VISIT THE EMERGENCY ESCAPE PATH LIGHT ALONG SEATS 77-79 UPPER DECK WERE BRIGHT AND THEN SHUTOFF INDEPENDENTLY OF OTHERS AFTER APPROX 5 SECONDS. MX R & R BATTERY PACK IN POWER SUPPLY, M334. EMERGENCY LIGHTS TESTED OK IAW AMM 35-51-04/201. ACFT IS OK FOR SERVICE.