What was found
AIRCRAFT WAS NOT GROUNDED: EMERGENCY LIGHTS INOPERATIVE AT THE FOLLOWING SEAT ROWS 3AC AND 4AC. ALSO, SEAT ROWS 8, 11, 12, 13, 16, 17, 18, 19, 20, 24, 25, 37 (ALL ABC SIDE). MAINTENANCE REPLACED EMERGENCY POWER SUPPLY UNIT 17WL (AALA202607290336) AND BATTERY (AALA202607293232) PER AMM 33-51-38. A SATISFACTORY OPERATIONAL CHECK OF THE EMERGENCY LIGHTING SYSTEM WAS ACCOMPLISHED WITH NO ISSUES NOTED.