Although the S.E.2010 was powered by Pratt & Whitney R-4360-B13 Wasp Major engines, the most powerful piston engine ever placed into production for aircraft use, a concern that the final design was underpowered led to a planned redesign. The final (15th) production aircraft was intended to be re-engined with 5,400 hp Allison T40 turboprops, but production was curtailed at eight and the more advanced version was never built. An Armagnac, S.O. 2060, ended its days as an engine test-bed, alternately fitted with turbojet engines fitted in a nacelle below the fuselage. It was tested with two Snecma Atar 101 turbojets each engine having a different system of afterburner. The Snecma Vulcain was also tested in a similar manner.