Aircraft designer OK Antonov in the office at work. OK Antonov with his deputies A. V. Bolobot and A. Ya. Belotetsky examines the drawings. View of the AN-24 passenger aircraft, designed by O. K. Antonov. View of the AN-14 multipurpose aircraft designed by O. K. Antonov. Test pilot V. A. Kalinin and the aircraft's leading engineer Yu. M. Kirzhner board the aircraft. AN-14 in the air.