Boeing 737 's nose gear collapsed on landing in New York . Aircraft slid down runway before coming to a stop ; passengers evacuated down slides . Several passengers hurt in incident ; largest domestic accident . Details released late Thursday about the New York accident show the plane changing its pitch suddenly in the final seconds of flight -- and in a direction opposite than desired . National Transportation Safety Board investigating ; Southwest .
Boeing 737 's nose gear collapsed on landing in New York . Aircraft slid down runway before coming to a stop ; passengers evacuated down slides . Several passengers hurt in incident ; largest domestic accident . National Transportation Safety Board investigating ; Southwest .