A development of the T.35 two-seater, the Guerchais Roche T.39 was built with either 3 seats (T.39/1) or 4 (T.39/2). A total of 5 were built.
175hp Salmson 9ND. Max speed 156mph, cruise 141, ceiling 23000 ft (it says here
). Empty 1563lb, MTOW 2535, span 30' 6", length 23' 7", wing 145sq ft.