Definition
An active radio link in which a pilot and an air traffic controller (or other ground station) can both transmit and receive on a common frequency, with each party hearing and acknowledging the other. In controlled airspace requirements, two-way radio communications are considered established only when the controller responds to the pilot using the aircraft's call sign.
Plain English
A working radio conversation where the pilot and controller can each talk to the other and hear each other clearly.
Context Anchor
Seen in airspace rules that tell a pilot when radio contact must be established before entering or operating in certain airspace.
Derivation
“Two-way” means information moves in both directions. “Communication” comes from a Latin word meaning “to share,” which fits the aviation meaning: the pilot is not just listening or broadcasting, but sharing information back and forth by radio.
Why Pilots Care
Required by regulation to enter certain controlled airspaces; without it, a pilot must remain outside and may face enforcement action for violations.
Intuition Check
Two-way radio communications does not mean simply hearing radio traffic. It means your aircraft and the correct controller or station can communicate with each other.
Example Sentence 1
Before entering the Class C airspace, the pilot established two-way radio communications with approach control.
Example Sentence 2
During the instrument flight, loss of two-way radio communications forced the pilot to follow lost-comm procedures.