sentences:  This new aircraft was powered by a single ENMA Tigre G.V; capable of generating a maximum of , this engine proved to be too weak to achieve satisfactory performance.The first prototype of the "Do 25" performed its maiden flight during July 1954.Due to the Tigre's performance deficit, it was decided to equip the second prototype with an alternative powerplant; it used the American-sourced Continental O-470 engine instead.