ACSS now embroiled in Honeywell TAWS lawsuit | Aviation International News

ACSS now embroiled in Honeywell TAWS lawsuit

Honeywell last month filed a second patent infringement law-
suit, this time against Phoenix-based Aviation Communications & Surveillance Systems

By Stephen Pope

May 5, 2008

Honeywell last month filed a second patent infringement law-
suit, this time against Phoenix-based Aviation Communications & Surveillance Systems (ACSS), alleging that the company’s forthcoming terrain awareness and warning system (TAWS) uses technology protected under patents filed by Honeywell in 1996 with the introduction of the Enhanced Ground Proximity Warning System (EGPWS).

With this latest legal action, ACSS becomes the fourth company targeted by Honeywell for alleged EGPWS patent violations. The first three were TAWS makers Goodrich, Universal Avionics and Sandel in May this year. ACSS, maker of
the popular TCAS 2000 product originally developed by Honeywell, is now developing an integrated system called T2CAS that would combine TCAS with TAWS. Certification of the product, which was originally announced at the Paris Air Show in June last year, is slated for the end of this year.

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