Definition
A self-operating machine or control system that performs a sequence of actions automatically in response to predetermined conditions or inputs, without continuous human direction.
Plain English
A device that runs itself by following a built-in set of rules, doing the right thing at the right time without someone having to operate it step by step.
Context Anchor
Seen in older aviation, maintenance, or systems descriptions when discussing automatic devices or automatic control.
Derivation
From the Greek 'automatos,' meaning 'acting of itself' (auto = self, matos = thinking or willing). The original sense — a thing that acts on its own — carries directly into the aviation meaning of a system that operates without ongoing human input.
Why Pilots Care
Modern cockpits rely heavily on automated systems. Knowing that an automaton follows its programming exactly — no more, no less — reminds the pilot that the system will do what it was told to do, even if that isn't what the pilot wanted. Monitoring automation is a core piloting skill.
Intuition Check
Do not read automaton as meaning a thinking human-like robot. In this context, it simply means a device that operates automatically.
Example Sentence 1
The autopilot acts as an automaton, holding the assigned heading and altitude until the pilot changes the inputs.
Example Sentence 2
Early autopilots functioned as simple automatons that held altitude and heading once engaged.