The U.S. Department of War said Monday that Boeing had been awarded an indefinite-delivery, indefinite-quantity, or IDIQ, contract for the F-15 Eagle Crest program, which supports the Air Force's broader F-15 fleet.
The contract covers what the department described as "aircraft production, systems integration, modernization, upgrades, retrofits, sustainment," as well as the establishment of depot maintenance capabilities.
Work will be carried out in St. Louis, Missouri, and is expected to continue through August 2037.
The initial ordering period runs through Aug. 24, 2031, with an option to extend it for another five years through August 2036.
"This contract involves Foreign Military Sales to Japan, Israel, Saudi Arabia, South Korea, Singapore, Indonesia, and Poland," the department said.
The deal was awarded to Boeing on a sole-source basis.
The $131.23 billion figure represents the maximum potential value of the IDIQ contract rather than money immediately committed to Boeing. Such contracts establish an overall framework under which individual orders can be placed over time without guaranteeing that the full ceiling will ultimately be spent.
Only $343,740 in fiscal 2026 research, development, test and evaluation funding was obligated at the time of the award, according to the department.
The announcement also does not specify how much of the potential contract value is associated with South Korea or indicate that Seoul is purchasing additional F-15 aircraft.
South Korea operates the F-15K Slam Eagle, a customized version of the F-15E that has served as one of the Republic of Korea Air Force's principal long-range strike aircraft since its introduction in 2005.
Seoul is already undertaking a major modernization of its F-15K fleet.
In January, the U.S. government awarded Boeing a separate contract worth up to $2.81 billion to design and develop an integrated package of upgrades for South Korea's F-15Ks.
The department said that contract would support modifications for the Republic of Korea Air Force and the Defense Acquisition Program Administration and would run through the end of 2037.
The latest Eagle Crest contract therefore provides a much larger long-term contracting framework covering the U.S. F-15 fleet and several overseas operators, including South Korea, rather than representing a new $131.23 billion aircraft purchase by Seoul.
AJP Takeaways
· Boeing secured a $131.23 billion ceiling contract for the F-15 Eagle Crest program, covering aircraft production, modernization, upgrades and long-term sustainment.
· South Korea is among seven countries included in potential Foreign Military Sales under the contract, alongside Japan, Israel, Saudi Arabia, Singapore, Indonesia and Poland.
· The $131.23 billion figure is a maximum contract ceiling, not a confirmed purchase by South Korea, which is separately modernizing its F-15K fleet through a Boeing upgrade program.
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