A method and apparatus for controlling a flight of an aircraft. Hinged joints each having a stationary member and a movable member are connected to the opposite ends of the casing, and pipes forming the handle are connected to the hinged joints, respectively. The packet header includes a format field to indicate the length of the packet header and to further specify whether the packet header includes a data payload, a subset of a type field to indicate the packet header relates to the message request transaction and a message field.