What was found
FLOOR EMERGENCY LIGHTS UNDER SEATS 5 AND 8, OVERHEAD EMERGENCY LIGHT SEAT 7 AND WING EMERGENCY STEP LIGHT FAILED PREFLIGHT TEST. COMPLIED WITH AFM CHARGING PROCEDURE FOR 30 MINS. EMERGENCY LIGHTS FAILED PREFLIGHT TEST A SECOND TIME. MAINTENANCE ADVISED TO NOT ATTEMPT A SECOND 30 MIN CHARGING CYCLE. REMOVED AND REPLACED #3 EMERGENCY BATTERY PACK WITH A REPAIRED BATTERY PACK IAW CE680A MM 33-50-06. REMOVED AND REPLACED #3 EMERGENCY BATTERY PACK G SWITCH WITH A NEW SWITCH ASSY IAW MM 33-50-11. ALL OPS CHECKS OF BATTERY PACK AND G SWITCH GOOD. NO OTHER DEFECTS NOTED.