What was found
BOS - DURING EMERGENCY LIGHT CHECK FOUND EMERGENCY EXIT SEAT ROW LIGHTS INOP. MAINTENANCE REPLACED MID CABIN RIGHT SIDE EMERGENCY POWER SUPPLY UNIT (FIN 12WL).
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
BOS - DURING EMERGENCY LIGHT CHECK FOUND EMERGENCY EXIT SEAT ROW LIGHTS INOP. MAINTENANCE REPLACED MID CABIN RIGHT SIDE EMERGENCY POWER SUPPLY UNIT (FIN 12WL).