If you plan to fly internationally, ALWAYS check with the airline prior to departure to make sure the car seat requirements for use on an aircraft, provided in your user guide, will be met. The aircraft certification for the Shyft DualRide is only relevant for US or Canadian airlines that fall under the provisions of the Federal Aviation Administration (FAA) or Transport Canada (TC). International airlines may not allow car seat use on their aircraft or may have seating systems incompatible with your Shyft DualRide. Additionally, vehicles in other countries also meet different regulatory standards and may not have seating systems that are compatible with this car seat.