The ASW 20 is an FAI 15 metre Class glider designed by Gerhard Waibel and built by Alexander Schleicher GmbH & Co. Its fuselage is nearly identical to the ASW19's mated to newly designed wings for the 15 metre Class. The prototype first flew in 1977. It proved to be a highly successful glider winning several World Championships and was still being flown at this level up to 1995. Developments along its production life included winglets pneumatic turbulators and wingtip extensions.
Made by Alexander Schleicher GmbH & CoSA Centrair.