The ASW 28 is a newer version of the ASW 24 sailplane. Unlike its predecessor, it has a more elaborate wing. ASW 28 is suitable for aerobatics. It has removable winglets that improve circling at minimum speed by decreasing induced resistance.

The fuselage of ASW 28 is made of fiberglass. The cockpit has a moulded seat.

The wing is a composite of Styrofoam, fiberglass, and balsa, all covered with white iron-on ORACOVER foil. The spar is made of wood. The parts of the wing are connected to the fuselage by a 14x2mm flat steel bar.

Standard equipment of the ASW 28 includes Schempp-Hirth air brakes. Additionally, the model can be custom equipped with retractable landing gear and an airtow release mechanism. The model has the original true scale sailplane livery applied. If the customer wishes, the colour of the standard decals can be changed or these can be completely custom made.

It is easy to fit the ASW 28 with servos. With basic equipment, the model requires six (6) servos, i.e., elevator, rudder, ailerons and airbrakes. Two (2) extra servos are then needed for the operation of the retractable landing gear (Optional) and airtow release mechanism (Optional).