Excessive fuel is dumped by ejection under a pressurized outflow velocity from an aircraft during flight as jets in a direction parallel to air stream flow relative to the aircraft, from a rearwardly facing exit opening of a fuel jettison device mounted on the lower surface of the aircraft, with the exit fixedly spaced below the lower aircraft surface a short distance to avoid the Coanda effect while reducing or eliminating fuel and fuel mist impingement on aircraft surfaces.