ACAS II Enhanced:

The Worldwide Choice

 An advanced version of our CAS 67A TCAS II, Honeywell's new CAS 67A ACAS II Enhanced for corporate and regional aviation is the first system of its type to receive FAA TSO approval. In addition to meeting international ACAS II standards for collision avoidance, the CAS 67A ACAS II Enhanced offers two levels of protection in today's increasingly complex flight environment. One, it serves as a moving line of defense against midair collisions. And two, it dramatically increases situational awareness on the flight deck. Part of Honeywell's new series of AXSTmFree Flight Solutions, CAS 67A ACAS II Enhanced is designed to provide protection today and well into the future.


Our CAS 67A ACAS II Enhanced is simply the perfect predictive tool, wherever you fly. It helps extend crew awareness further in front of the aircraft. It provides traffic alerts and resolution advisories. And it also directs the pilot's visual scan, revealing targets they might otherwise miss.

This forward-looking approach to collision avoidance started in 1955, when Dr. J. S. Morrell of Bendix published "The Physics of Collisions." Including the algorithm that defines the rate of closure between approaching aircraft, this seminal work became the basis for the development of all collision avoidance systems (CAS).

Through the 1960s and 1970s, we led the way in collision avoidance, developing prototype systems for the U.S. Army and FAA. In the 1980s, when TCAS II was mandated for the airlines, we were ready with patented hardware that surpassed FAA requirements for signal processing and accuracy.

Today with its advanced capability, the CAS 67A ACAS II Enhanced serves as a cornerstone of the upcoming Free Flight architecture, embodying the Future Aeronautical Navigation System (TANS) concept (GATM/GANS for military applications). And as one of the AXS Safety Solutions, CAS 67A ACAS II Enhanced provides access to Honeywell's full range of flight technologies, including EGPWS, weather radar and data recorders.