What was found
DURING A PS-1 CHECK, FOUND THE EMERGENCY LIGHTS INOPERATIVE, COCKPIT FLOOD LIGHT, AISLE LIGHT 1 AND EXTERNAL WING TO FUSELAGE FAIRNG LIGHT. REMOVED AND REPLACED THE NR 1 EMERGENCY BATTERY HOLDER ASSY AND NR 1 EMERGENCY BATTERY CHARGER ASSY IAW AMM 33-50-04. REMOVED AND REPLACED THE NR 1 EMERGENCY LIGHT INVERTER IAW AMM 33-50-11. R & R EXTERNAL WING TO FUSELAGE EMERGENCY LIGHT IAW AMM 33-50-10. PERFORMED AN OPS CHECK IAW AMM 33-50-00. OPS CHECKED GOOD.