With more efficient engines (including the option of PT6As) and greater wing span, the updated Metroliner III version allows for greater takeoff weights. It s also more economical to operate, turning it into a perfect cargo- and regional airplane.Metro III can be easily configured for cargo, ambulance or 19-seat commuter operation. With up to 500km/h high cruise-speed and a pressurized cabin, it is the largest aircraft that can land on short unsealed airstrips.