Plain English Meaning

A wired headset system inside the aircraft so the people on board can talk to each other clearly over the noise of the engine and wind.

Full Definition

An internal voice communication system that allows the pilot, instructor, and any passengers in an aircraft to speak to and hear each other through headsets, separate from the radios used to talk to air traffic control or other aircraft.

Context Anchor

Commonly used during flight training so the instructor and student can communicate clearly while the engine, airflow, and other cockpit sounds are loud.

Derivation

From 'inter' (between) and 'communication.' It is the system that handles communication between people inside the aircraft, as distinct from communication with anyone outside it.

Why Pilots Care

Clear internal communication supports instruction, , and when external noise would otherwise prevent effective conversation.