What Is TCAS? A Comprehensive Guide to Traffic Collision Avoidance Systems
Pilot Institute
JULY 4, 2025
Newer glass cockpits may show this guidance as a flight director cue on the primary flight display (PFD) Aural Alerts: A synthesized voice will call out “ Traffic, traffic ” for a TA, and explicit instructions like “ Climb, climb ” or “ Descend, descend now! ” The colored bands appear on the VSI only during an RA.
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