Definition 1 of 2
Definition
An electronic device used in autoflight systems that processes inputs from sensors, the autopilot, and the pilot, and sends commands to the flight control surfaces or servos to maintain or change the aircraft's attitude and flight path.
Plain English
A small computer that takes information about how the aircraft is flying, decides what corrections are needed, and tells the controls what to do.
Context Anchor
Commonly seen in unmanned aircraft, drones, and aircraft systems discussions involving electronic flight control.
Derivation
From 'flight' (the act of flying) and 'controller' (something that regulates or directs). The name describes its role: a device that controls flight.
Why Pilots Care
Flight controllers prevent mid-air collisions and runway conflicts by providing real-time separation instructions and traffic advisories.
Analogy
It is like the nervous system between the pilot and the aircraft. The pilot gives a command, and the flight controller helps turn that command into aircraft movement.
Intuition Check
Do not assume flight controller always means a person. In this context, it usually means an electronic control unit carried on the aircraft.
Example Sentence 1
When the autopilot was engaged, the flight controller adjusted the elevator to hold the selected altitude.
Example Sentence 2
After landing we switched to the flight controller for taxi instructions to the ramp.