In 1993, Honeywell was the first to certify a "sole means" GPS non-precision approach
when the ATR-72 aircraft was certified in Aspen, Colo.
Federal Aviation Administration (FAA) navigation performance requirements for domestic en route, terminal, non-precision approach
and precision approach phase of flight.
Jones explains that "the Collins GPS based avionics system will allow easier compliance with future navigation requirements in Europe by providing operators with more direct routing, more efficient terminal procedures and non-precision approach
The Honeywell/Trimble products use the accuracy of a built-in GPS receiver to provide lateral and vertical navigation for en route, terminal and non-precision approach
Safety features on the aircraft include a Flight Management System (FMS) with integrated, non-precision approach
capable Global Positioning Service (GPS); windshear warning integrated with the Ground Proximity Warning System (GPWS); Traffic Alert and Collision Avoidance Systems (TCAS) and the most-capable flight data and voice recorders available.
The HT9100 GNSS Navigation Management System and HT9000 GNSS Navigator use the accuracy of a built-in GPS receiver to provide coupled lateral navigation for en route, terminal and non-precision approach
Trimble Avionics based in Austin, TX, has pioneered the utility of GPS avionics through equipment development and certification of its 8100 and 2101 I/O products, non-precision approach
certifications and, most recently, the first operational certification of a scheduled airline using GPS for primary oceanic navigation.