What was found
EXIT SIGN OVER SEAT 7 WILL NOT ILLUMINATE DURING PRE-FLIGHT EMERGENCY LIGHTING TEST. ATTEMPTED TO CHARGE BATTERY PACK PER TEXTRON PROCEDURE WITH NO RESULTS. MAIN CABIN DOOR EMERGENCY LIGHTS ARE ALL FUNCTIONING NORMALLY AS REQUIRED PER MEL 33-50-03. REMOVED DEFECTIVE 114 EMERGENCY LIGHT POWER SUPPLIED AND INSTALLED REPAIRED CUSTOMER SUPPLIED #4 EMERGENCY LIGHT POWER SUPPLIED, COMPLIED WITH OPERATIONAL TEST OF THE EMERGENCY LIGHTS WITH NO DEFECTS NOTED REF MM 33-50-00.