A two-seat, side-by-side glider, a developed version of the Type 21B with larger wing span, enclosed cockpit, and revised tail unit. Braced wing, with airbrakes, no flaps.
Wing span: 17.22m / 56ft 6in.
Length: 8.15m / 26ft 9in
Wing span: 25.36m / 273.75 sq. ft
Aspect ratio: 11.7
Wing sections: Gottingen 535 at root, Sym. at tip