The term 'PLANE SETTING' can be broken down into two words, 'PLANE' and 'SETTING'. The first word, 'PLANE', is a noun that refers to an aircraft. The second word, 'SETTING', is a verb that means to adjust or arrange something. The crossword solution for this term is 'Autopilot', which is a system of automatic controls that allow an aircraft to fly without direct human intervention. Autopilot systems are used to maintain a desired altitude, heading, and airspeed, as well as to follow a predetermined flight path.