Description

A Airborne Collision Avoidance System (ACAS) Alert Prevention (TCAP) functionality has been introduced by Airbus to prevent the generation of Resolution Advisory (RA) in 1000-foot level-off geometries. The functionality which is currently available for the Airbus wide body aircraft (and expected to become available on the A320 family of aircraft) uses a new altitude capture law for flight guidance computers, which decreases aircraft’s vertical rate towards the selected altitude, once a Traffic Advisory (TA) has been generated and the autopilot and/or flight director are engaged.

The TCAP functionality is complementary to the flight guidance computer’s conventional altitude capture function.