The U.S. Defense Security Cooperation Agency, in a notification to Congress, said the arrangement for the conventional takeoff and landing variant of the aircraft would include associated equipment, parts, training and logistical support.
"The proposed sale of F-35s will provide the Republic of Korea with a credible defense capability to deter aggression in the region and ensure interoperability with U.S. forces," the agency said. "The proposed sale will augment Korea's operational aircraft inventory and enhance its air-to-air and air-to-ground self-defense capability."
Lockheed Martin Aeronautics and Pratt and Whitney Military Engines would be prime contractors.
DSCA added that "this proposal is being offered in the context of a competition. If the proposal is accepted, it is expected that offset agreements will be required."
U.S. government and contractor representatives would be required to travel to South Korea for technical reviews/support, program management over a 15-year period.
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