What was found
PHL - DURING DESCENT INTO PHL, FLIGHT ATTENDANT REPORTED SEVERAL EMERGENCY EXIT LIGHTS ILLUMINATED INCLUDING OVERHEAD LIGHTS AT SEAT 22F, SEAT LIGHTS AT 24C AND 25C, DOOR 2L AT TOP OF DOOR AND DOOR 2R ON SIDE. MAINTENANCE REMOVED AND REPLACED AFT LEFT EMERGENCY EXIT BATTERY PACK. OPERATIONAL CHECK NORMAL ON GROUND.