… recertification for the plane after two fatal crashes in Indonesia and Ethiopia in 2018 and 2019, respectively … Travel bans imposed by countries, including the U.S. and England, further cut down on the number of available flights…. recertification for the plane after two fatal crashes in Indonesia and Ethiopia in 2018 and 2019, respectively … Travel bans imposed by countries, including the U.S. and England, further cut down on the number of available flights.