Definition
A descriptor for communication or signals transmitted from an aircraft in flight to a station on the ground, typically by radio. It is used to label the direction of a transmission or the type of communication channel involved.
Plain English
Something sent from a plane in the air down to someone on the ground — usually a radio call.
Context Anchor
Seen in FAA abbreviation lists and in discussions of radio communication between an aircraft and a ground station.
Why Pilots Care
Knowing whether a frequency or message is air-to-ground, ground-to-air, or air-to-air helps pilots use the right channel and understand who is talking to whom.
Intuition Check
A/G does not mean “air and ground” as two separate places. In this context, it means from the aircraft toward the ground.
Example Sentence 1
The pilot used the A/G frequency to report her position to the flight service station.
Example Sentence 2
Air to ground calls are used to request updated weather from the flight service station.