As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN AIRCRAFT POWER WAS TURNED OFF AND SET GROUND SERVICE BUS EMERGENCY LIGHTS AT SEAT ROW 8DE TO 14DEF STAYED ON. REPLACED EMERGENCY LIGHTS POWER SUPPLY (P4010051112) AND BATTERY FOR EMERGENCY LIGHTS FROM SEAT ROW 8DE TO 14DEF. OPS CHECK NORMAL.