Schweizer 1-35

The Schweizer 1-35 was designed by Les Schweizer.  Schweizer Aircraft started construction of the 1-35 prototype in late 1972 and it first flew in April 1973. The company carried out side-by-side comparisons with fiberglass sailplanes as part of 50 hours of flight evaluations before making the decision to proceed with manufacturing the design on May 10, 1973.

The 1-35 is an all-metal aircraft. The wing has a single spar and the stressed skin features multi-stringers for stiffness, to best retain airfoil shape and laminar flow. The aircraft's elevator and rudder are fabric covered. The 1-35 carries 320 lb of water ballast in two wing tanks.

Because the 1969 design rules for the Standard Class allowed flaps, the SGS 1-35 is equipped with plain flaps.

The 1-35 received its type certificate on April 25, 1974.

The type certificate is currently held by K & L Soaring of Cayuta New York. K & L Soaring now provides all parts and support for the Schweizer line of sailplanes.