 The glider had successfully proven the design and was followed by a similar sized powered test aircraft, the EFW N-20.02 "Arbalète" ("Crossbow"), powered by four 0.98 kN (220 lbf) Turboméca Piméné turbojets mounted above and below the wings.This aircraft first flew on 16 November 1951.It proved to have good manoeuvrability and reached a maximum speed of 750 km/h (466 mph).