Plain English Meaning
A radio call where the pilot tells the controller where the aircraft is, what time it got there, how high it is, and where it's going next.
Full Definition
A radio report made by a pilot to ATC stating the aircraft's location, time over that location, altitude, and other required details, used so controllers can track the flight's progress along its route.
Context Anchor
Used in radio communication with air traffic control, especially when the controller needs the aircraft’s location confirmed or when radar coverage is limited or unavailable.