Analysis of the technical condition of AN-28 aircraft in 1991. In Russian (ask us if in doubt)./Analiz tekhnicheskogo sostoyaniya samoletov AN 28 v 1991g. Report of the design team on the state of the AN-28 fleet for 1991, specifying characteristic shortcomings and defects and ways to eliminate them. SKUalb4e7bd5414d9716ae.