Definition
A specific time, assigned by air traffic management, at which an aircraft is required to arrive over a defined point, such as a meter fix, arrival fix, or runway threshold. The CTA is the result of arrival sequencing and traffic flow management, and the flight is expected to adjust speed or routing as needed to meet it within an allowed tolerance.
Plain English
A target time the controller wants you to cross a certain point. Air traffic gives you the time, and you adjust your speed or path to hit it.
Context Anchor
Seen in air traffic flow management, especially when delays, spacing, or busy airport arrival demand require flights to be metered by time.
Derivation
Controlled here means managed or directed by ATC, not restricted in the everyday sense. Time of Arrival is plain English: the moment the aircraft arrives at a specified point.
Why Pilots Care
Meeting the assigned time reduces holding, saves fuel, and prevents arrival congestion that can lead to delays or go-arounds.
Intuition Check
Do not read “controlled” as meaning the pilot personally controls the arrival time. Here, “controlled” means the arrival time is assigned and managed by the air traffic system.
Example Sentence 1
ATC issued a CTA of 1432Z over the arrival fix, so the crew reduced cruise speed slightly to arrive on time.
Example Sentence 2
The crew adjusted speed to meet the CTA and avoid entering a holding pattern.