Two dozen passengers of an U.S. Airways flight were evacuated from an airplane at the Nashville International Airport after a minor electrical fire broke out. The incident involving flight No. 3411 from Philadelphia occurred late Saturday afternoon. According to airport Communications Manager Shannon Sumrall, a defogging system on the plane's windshield was malfunctioning and is believed to have sparked the fire. The fire was quickly extinguished. U.S. Airways spokesperson Michelle Mohr added the plane, an Embraer 170 large regional jet, was operated by the airline's partner, Republic Airlines. At the time of the evacuation, four crew members were on board the flight along with 24 passengers.No injuries were reported.