if (order == NULL|| (order->type == OT_DUMMY && !CheckForValidOrders(v))) {

		/*

		 * We do not have an order. This can be divided into two cases:

		 * 1) we are heading to an invalid station. In this case we must

		 *    find another airport to go to. If there is nowhere to go,

		 *    we will destroy the aircraft as it otherwise will enter

		 *    the holding pattern for the first airport, which can cause

		 *    the plane to go into an undefined state when building an

		 *    airport with the same StationID.

		 * 2) we are (still) heading to a (still) valid airport, then we

		 *    can continue going there. This can happen when you are

		 *    changing the aircraft's orders while in-flight or in for

		 *    example a depot. However, when we have a current order to

		 *    go to a depot, we have to keep that order so the aircraft

		 *    actually stops.

		 */

		const Station *st = GetStation(v->u.air.targetairport);

		if (!st->IsValid() || st->airport_tile == 0) {

			int32 ret;

			PlayerID old_player = _current_player;

			_current_player = v->owner;

			ret = DoCommand(v->tile, v->index, 0, DC_EXEC, CMD_SEND_AIRCRAFT_TO_HANGAR);

			_current_player = old_player;

			if (CmdFailed(ret)) CrashAirplane(v);

		} else if (v->current_order.type != OT_GOTO_DEPOT) {

			v->current_order.type = OT_NOTHING;

			v->current_order.flags = 0;

		}