The plane, headed for Baltimore from Nashville, made an emergency landing in Charleston, West Virginia at 4:30 p.m. last night after a hole opened up in the fuselage, causing the cabin to depressurize. None of the 126 passengers or five crew members were injured.
Boeing 737-300 jets make up about one third of Southwest's fleet. No problems were found after the resulting inspection of about 180 planes.
A Southwest spokesperson has said that the airline will be working with the National Transportation Safety Board to investigate the cause of the hole.