 Ariko Dennis Muilenburg yongeyeho ko mu gihe iyi ndege yo muri ubu bwoko izaba yongeye kwemererwa gukora hamaze gukosorwa porogaramu software ya mudasobwa ndetse namabwiriza avuguruye agenewe abapilote, izaba ari imwe mu ndege zibayeho ku isi zifite umutekano usesuye kuzigendamo. 