Definition
An automated, voice-based service available to general aviation pilots that provides spoken advisories about nearby air traffic and relevant airspace information, typically delivered via a phone-based system to support situational awareness during flight planning or in flight.
Plain English
A service that tells pilots, in plain spoken words, about other aircraft nearby and what airspace they are dealing with, so they have a clearer picture of what is around them.
Context Anchor
You may see ATAS in FAA acronym lists, flight planning material, or discussions of advisory information available to pilots before or during a flight.
Why Pilots Care
Provides timely information that supports safe navigation, airspace compliance, and traffic avoidance.
Intuition Check
Do not read advisory service as control service. ATAS provides helpful information; it does not replace a required ATC clearance or take over the pilot’s responsibility to avoid other aircraft.
Example Sentence 1
Before departing the uncontrolled field, the pilot used the airspace and traffic advisory service to check for reported traffic in the area.
Example Sentence 2
ATAS advisories alerted the crew to nearby traffic during the approach.