}

	if (callback == CALLBACK_FAILED) {

		/* If the callback failed, or wasn't executed, use the aircraft's

		 * default cargo capacity */

		pass = AircraftDefaultCargoCapacity(new_cid, v->engine_type);

	} else {

		pass = callback;

	}

	_returned_refit_capacity = pass;

	cost = 0;

		cost = GetRefitCost(v->engine_type);

	}

	if (flags & DC_EXEC) {

		Vehicle *u;

		v->cargo_cap = pass;

		u = v->next;

		mail = (new_cid != CT_PASSENGERS) ? 0 : avi->mail_capacity;

		u->cargo_cap = mail;

		if (v->cargo_type == new_cid) {

			v->cargo_count = min(pass, v->cargo_count);