public ActionResult Create(Models.Aircraft aircraft)
        {
            if (ModelState.IsValid)
            {
                aircraft.Crear();
                return RedirectToAction("Details", new { id = aircraft.ID });
            }

            return View(aircraft);
        }
        public ActionResult Create(Models.Passenger passenger)
        {
            if (ModelState.IsValid)
            {
                passenger.Crear();
                return RedirectToAction("Details", new { id = passenger.ID });
            }

            return View(passenger);
        }