07/07/2003. Remarks by Walter van Tilborg: "The AT-34 was a joint development by Allison Gas Turbine and Soloy Conversions of the Beech T-34 Mentor. A 420 hp Allison 250-B17 was fitted, so were tiptanks and a large ventral fin. The AT-34 first flew 1987, no further aircraft were produced."