The Slingsby Type 61 Falke was a licence-built version of the Scheibe SF 25B Motor glider built by Slingsby Sailplanes.

In 1970 Slingsby acquired a licence to build the SF 25B as the Type 61A Falke, a side-by-side two-seat dual training monoplane.

This first variant was powered by a 45 hp Starck Stamo MS1500 engine and first flew at Wombleton on 8 February 1971.

The aircraft were to be operated by Volunteer Gliding Schools for basic air cadet training.

RAF VGS 642 XZ550 August 1978, XZ563 October 1978, ZA630 March 1980, ZA657, ZA659 replaced XZ653 RAF VGS 644 ZA634 29 March 1980.