Federal officials are investigating a Southwest Airlines low flight over Oklahoma City suburbs ABC NewsSouthwest flight heading for Oklahoma City dives to 500 feet above neighborhood Fox BusinessBoeing 737 inexplicably flies 500 feet over neighborhood: ‘Thought it was gonna hit my house’ Yahoo! Voices‘Low altitude alert’: Southwest airlines descends to alarmingly low height, FAA begins probe The Times of IndiaSouthwest Boeing 737 inexplicably drops to less than 500 ft. New York Post