Prototype. First flew as HB-HOH in 1983. Cancelled from the register in 2010. Preserved at Lucerne Museum of Transport. 100 of the type were produced for Malaysia and Indonesia.

The Swisstrainer was designed to have as many parts as possible to be interchangeable. The concept never caught on and only two were built with this initial prototype placed on display. In 1993, all rights to the design were acquired by SME Aerospace of Malaysia, who produced it as the Aero Tiga for the Royal Malaysian Air Force.