Boeing has delivered three F-15K Slam Eagles to the Republic of Korea Air Force (ROKAF) at Daegu Air Base.

The company delivered the first three of 21 F-15Ks it is producing under the Next Fighter II contract to the ROKAF in September.

The remaining 15 aircraft will be delivered through March 2012.

"Boeing is honored to deliver these highly advanced fighters to the ROKAF," said Roger Besancenez, Boeing F-15 Program vice president.

"We will continue to work closely with our ROKAF customers to prepare for upcoming deliveries that will provide them with superior air combat capability, as we remain committed to our goal of completing the deliveries on budget and on schedule, as promised."

Six of the new F-15K Slam Eagles are scheduled to participate in an advanced aerial combat training exercise at Nellis Air Force Base, Nev., in late 2011.

The F-15K is an advanced variant of the combat-proven F-15E. Equipped with the latest technological upgrades, it is extremely capable, survivable and maintainable.

The aircraft's service life is planned through 2040, with technology insertions and upgrades throughout its life cycle. Boeing completed delivery of 40 Next Fighter I F-15K aircraft to the ROKAF in October 2008.