The Mongolian Airlines (Miat) flight from Ulaanbaatar to Seoulthat was scheduled to depart at 06.45 on Friday has been delayed due to an unspecified technical problem. The plane is a Boeing 737. Officials say mechanics are working to correct the problem. The flight is now scheduled to depart at 21.30 on Friday. Chinggis Khaan Airport officials were able to return the passengers to the city by buses so they wouldn’t have to wait all day at the airport.