As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHT ON SEAT 16D-20D IS INOPERATIVE. REMOVED AND REPLACED NUMBER 4 BATTERY PACK PER AMM 33-51-06. OPERATIONS CHECK GOOD (SEE SDR AALA201802279035). ALSO REMOVED AND REPLACED HARNESS ON SEAT 16F TO RECEPTACAL D12836 PER ESO60882. THE AIRCRAFT WAS GROUNDED.