It was one of the 21-satellite Global Positioning System (GPS) Block II series.

When complete, the constellation will provide precise position data (accurate to within 16 m) to military and civilian users worldwide.

The GPS II satellites, built by Rockwell International for Air Force Space Systems Division, each have a 7.5-year design life.

The Air Force intends to launch a GPS II every 2 to 3 months until the constellation of 21 operational satellites and 3 spares is aloft.

[1] It had a design life of 7.5 years;[5] however, it operated until 26 March 2000, when its reaction wheels failed.