Definition
A display, available to controllers, that shows aircraft identification and flight-associated data for aircraft currently within or about to enter the controller's area of responsibility. The list is automatically generated by the air traffic control automation system and is used to manage and track flights.
Plain English
A computer-generated list on the controller's screen that shows which aircraft are in their airspace, along with key information about each flight.
Context Anchor
You are most likely to see ACL in FAA glossary or air traffic control automation references, not as a phrase you normally say on the radio as a pilot.
Why Pilots Care
Pilots rarely interact with the ACL directly, but understanding that controllers manage flights through automated lists helps explain why accurate flight plans, correct transponder codes, and timely position reports matter — they keep the pilot's data correct on the controller's display.
Analogy
It is like a live roster for a controller’s traffic: each aircraft has an entry so the controller can keep track of it quickly.
Intuition Check
Do not read Aircraft List as a general paperwork list of airplanes owned by someone. In this FAA context, it refers to an air traffic control system list used to track aircraft being handled or displayed.
Example Sentence 1
As the flight crossed into the new sector, its data block appeared on the controller's Aircraft List.
Example Sentence 2
Before filing the flight plan, the dispatcher reviewed the ACL for available aircraft types.