As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - FLT 3686 - CREW REPORTED THE CABIN EMERGENCY LIGHTS TO BE INOPERATIVE. MAINTENANCE REMOVED AND REPLACED ALL FOUR EMERGENCY LIGHT BATTERY PACKS (S/N'S 1281, 1216, 1114 AND 1188) AW SAAB MM. OPERATIONAL CHECK WAS GOOD AND AIRCRAFT WAS RETURNED TO SERVICE. (M)