Local NTSB Investigating Southwest Airlines Runway Excursion at Midway Airport by Gary Kopycinski on April 27, 2011 Gary Kopycinski Author More in Local: Park Forest’s Sandra Zoellner Retires After 21 Years of Service June 17, 2026 Save the date for The Prairie Party at theNate June 17, 2026 Governors State Has New Soccer Complex and New Men’s Coach June 17, 2026 Washington, D.C.—(ENEWSPF)—April 26, 2011. The National Transportation Safety Board (NTSB) is investigating an incident today involving a Southwest Airlines Boeing 737-700 (N799SW) that exited the runway at Chicago Midway Airport.