Abstract: A mechanical interface between an interior actuating handle ensuring the opening of an aircraft door and a reserve of electrical energy for assisting the door emergency opening. The interface having an arming handle movable between an armed and a disarmed positions and coupled to the interior actuating handle by a transmission mechanism including a first lever connected to the arming handle and to a shaft carrying a second lever supporting a rod and a clutch in rotation with the second lever and the first lever and a cam mounted on the shaft and cooperating with a driving element carried by the actuating handle. When the arming handle is in the armed position, a pre-rotation of the actuating handle at an angle between 3° and 50° from its rest position along with the rotation of the cam, pivoting the second lever, translational movement of the rod, and activation of the reserve of electrical energy.