[3] The launch took place from Space Launch Complex 37B at the Cape Canaveral Air Force Station,[5] and placed USA-239 directly into medium Earth orbit.

[4] The rocket's second stage failed to provide the expected full thrust in all of its three burns due to a leak above the narrow throat portion of the thrust chamber, however the stage had enough propellant margins to put the satellite in the correct orbit.

[6] As of 18 February 2014, USA-239 was in an orbit with a perigee of 20,231 kilometers (12,571 mi), an apogee of 20,132 kilometers (12,509 mi), a period of 717.96 minutes, and 54.87 degrees of inclination to the equator.

[4] It is used to broadcast the PRN 24 signal, and operates in slot 1 of plane A of the GPS constellation.

The satellite has a design life of 15 years and a mass of 1,630 kilograms (3,590 lb).