SZD-9 Bocian
…SZD-9bis Bocian-1B – improved variant (e.g. bigger tailfin), 11 built SZD-9bis Bocian-1C – improved variant of 1954 (wings swept at lesser angle, modified control surfaces and rear skid), 40 built SZD-9bis Bocian-Z – modified competition variant for 1956 World Gliding Competition…