The US government has approved a $250 million support package for South Korea’s fleet of Hawker RC-800 Peace Krypton tactical signals intelligence jets.

The package includes sustainment of equipment, minor modifications, upgrades, spare parts, and other equipment and services, according to the US Defense Security Cooperation Agency (DSCA). The prime contractor for the work is Lockheed Martin.

Cirium fleets data indicates that the Republic of Korea Air Force operates eight Peace Krypton aircraft, which are derived from the Hawker 800XP business jet. The average age of the fleet is 19.2 years.

“The proposed sale will improve Korea’s capability to meet current and future threats by supporting operation of its fleet of Peace Krypton aircraft and enabling continued intelligence, surveillance and reconnaissance interoperability with the United States,” says the DSCA. “Korea will have no difficulty absorbing this follow-on support into its armed forces.”