 The FAA is investigating another close call involving Southwest Airlines, a plane dropping within 150 feet of the water off Florida July 14th. Details from ABC's Ariel Reshef at Newark International Airport. The flight en route from Columbus, Ohio to Tampa, when on approach, it suddenly dipped to dangerously low altitude. An air traffic controller quickly alerting the pilot. It's Atlas 425, low altitude alert, check your altitude, Tampa's altimeter 3014.