The de Havilland DHC-7 / Dash 7 turboprop aircraft. With their excellent STOL performance, their designs could fly into smaller airports located in city centres and smaller, outlying, more austere airports having runways that the other aircraft could not easily use (unpaved, unimproved). A total of 113 aircraft were built until 1988. Product lines were closed at this year since Boieng took over the company.