What information does a Traffic Advisory (TA) provide?

• A. Information about aircraft within 40 seconds from point of closest contact
• B. Information about aircraft within 25 seconds from point of closest contact
• C. Information about aircraft within 60 seconds from point of closest contact
• D. Information about aircraft within 15 seconds from point of closest contact

Answer: (A)

Traffic Advisory is an alert that another aircraft is likely to be in the vicinity within about 40 seconds of the point of closest approach. This early warning gives you time to visually locate the intruder, assess its relative position and trend, and prepare for a possible maneuver without receiving specific avoidance instructions. The 40-second window is the standard horizon TCAS uses for TA, balancing timely awareness with practical actions. The other time frames don’t match this established TA trigger.