Abstract: An aircraft part, such as a cockpit or cabin, comprising a support structure and a robot arm. The robot arm has a proximal end attached to the support structure and a distal end configured to hold an electronic device. An actuation system drives the arm so that the arm distal end moves relative to the support structure. A non-volatile memory contains data, and a controller is programmed to drive the actuation system according to the data to move the arm distal end to a position determined by the data. The arm comprises a “snake-arm” with three or more links connected by a series of two or more joints, each joint connecting together a respective adjacent pair of the links and permitting relative rotation between the adjacent pair of links. The actuation system moves the arm distal end by causing a relative rotation between the links about their joints.