FILE PHOTO: A Southwest Airlines Co. Boeing 737 MAX 8 aircraft taxis after landing at Midway International Airport in Chicago, Illinois, U.S., March 13, 2019. REUTERS/Kamil Kraczynski
FILE PHOTO: A Southwest Airlines Co. Boeing 737 MAX 8 aircraft taxis after landing at Midway International Airport in Chicago, Illinois, U.S., March 13, 2019. REUTERS/Kamil Kraczynski