Definition
A radio communication term used by the speaker to indicate that the conversation is ended and no response is expected.
Plain English
I'm done talking and I don't expect you to reply.
Context Anchor
Used in aviation radio communication when a message is complete and no further response is expected.
Derivation
From the everyday word 'out,' meaning finished or done. In radio procedure it signals that the speaker is finished and is leaving the conversation.
Why Pilots Care
Prevents unnecessary radio chatter and confirms the exchange is finished so both parties can move on.
Intuition Check
OUT does not mean the aircraft is outside something here. In radio use, it means the conversation is closed and no reply is expected.
Example Sentence 1
After receiving the weather information, the pilot finished with, 'Thanks for the update, out.'
Example Sentence 2
The controller ended the exchange with, 'Report entering the pattern, OUT.'