As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOS - EMERGENCY LIGHTS AT EMERGENCY EXIT CEILING AND OVER DOOR AT SEAT ROW 9 INOPERATIVE. REPLACED BATTERY PACKS AT SEAT ROWS 9 AND 18 AND 19 FOR EMERGENCY LIGHTS AT EMERGENCY EXIT CEILING AND OVER DOOR AT SEAT ROW 9. SYSTEM GROUND CHECKED NORMAL OPERATION.