Garmin Delivers High-Performance, All-Digital Radar Altimeter

Olathe, KS - Garmin International Inc., a unit of Garmin Ltd., announces the GRA 5500, a high-performance, all-digital radar altimeter for transport category, helicopter, business and general aviation aircraft. Using patent-pending digital signal processing technology, the GRA 5500 works to provide smooth altitude tracking, resulting in a consistent and highly accurate altitude above ground indication, even over rough terrain, tree canopies, sand and choppy water.

Because of its all-digital design, the GRA 5500 is able to intelligently process hundreds of altitude measurements per second and apply advanced digital filters to help detect and mitigate false altitude returns. The hardware is designed to withstand harsh environmental conditions, meeting the FAA's latest and more rigorous flight test standards. The GRA 5500 has received the FAA’s Technical Standard Order (TSO) authorization.

Patent-pending technology in the GRA 5500 incorporates built-in self-test monitors that continuously cross check the data and system integrity, assuring the pilot of an accurate measurement of the height above ground. This technology also provides for a simpler installation, with easy calibration, and eliminates the requirement for long lengths of antenna cables that are traditionally required in the installation of radar altimeters.

An industry-standard ARINC 429 interface allows the GRA 5500 to integrate with Garmin integrated flight decks and flight displays, as well as third-party products. Compatible Garmin displays include the G1000, G1000H, G2000, G3000, G5000, G5000H, G600, G500 and G500H. It can also integrate with existing systems to enhance NVIS operations and fulfill the radar altimeter requirements for Class A TAWS, CAT II ILS operations and TCAS II/ACAS II. The GRA 5500 is also compatible with Garmin’s new TCAS II/ACAS II solution. A number of aircraft manufacturers have already selected the GRA 5500 as standard equipment on new aircraft, including the Cessna Citation X, Citation Sovereign, Citation Latitude, Citation Longitude and the Bell Helicopter 525 Relentless.

For more information, visit www.garmin.com.