As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A MAINTENANCE WALK AROUND CHECK, THE AFT RT SERVICE DOOR (R2) EMERGENCY EXIT ESCAPE SLIDE LIGHT WOULD NOT ILLUMINATE. MAINTENANCE REOMVED AND REPLACED THE BATTERY PACK FOR THE AFT RT SERVICE DOOR (R2 EMERGENCY EXIT SLIDE LIGHT IAW MM. EMERGENCY EXIT LIGHTS NOW OPERATE NORMALLY. (K)