The rectangular shape of the Dornier 228's fuselage section and large side-loading doors make it particularly suitable for utility operators, which is a market that Dornier had targeted with the type from the onset. According to Flight International, one of the more distinguishing features of the Dornier 228 is the supercritical wing used. The structure of the wing is atypical, consisting of a box formed from four integrally-milled alloy panels. Kevlar is used for the ribs, stringers, trailing edge and fowler flaps, and the wing's leading edge is conventional alloy sheet metal. Benefits of this wing over conventional methodology include a 15% reduction in weight, the elimination of 12,000 rivets, and lowering the per-aircraft manufacturing workload by roughly 340 man hours. Both the fuselage and tail are of a conventional design, but make use of chemical milling in order to save weight.