Pratt & Whitney, a business unit of RTX Corporation, announced that it has secured a $3.8 billion modification for lots 18‑19 of the F135 engine, the powerplant for the F‑35 Lightning II. The modification brings the total value of the F135 lots 18‑19 contract to $6.6 billion, giving Pratt & Whitney a multi‑year, high‑value revenue stream that will support U.S. and allied air forces for the foreseeable future.
The award confirms sustained demand for the F135, the most advanced fighter engine in the world, and underscores RTX’s position as the sole supplier of the engine for all F‑35 variants. Pratt & Whitney has invested more than $1 billion over the past five years to expand and modernize its production capacity, a move that has increased F135 output by 20% and positioned the company to meet the growing global demand for the F‑35 program.
RTX’s 2025 sales topped $88 billion, with the Pratt & Whitney segment contributing a substantial share of that figure. The new contract adds a significant portion of the $6.6 billion to the defense segment’s revenue base, reinforcing the company’s strategy of leveraging its integrated aerospace and defense capabilities to capture long‑term contracts.
Beyond the financial upside, the contract has broader economic implications. The F135 program supports more than 66,000 jobs across 47 U.S. states and territories and generated over $9 billion in domestic economic impact in 2025. The continued investment in production capacity and the new contract together signal a robust outlook for the U.S. defense industrial base and the global F‑35 fleet.
Jill Albertelli, President of Military Engines for Pratt & Whitney, said, "The F135 is the most advanced military engine in the world, delivering unmatched thrust, reliability and mission readiness for the United States and its allies." The quote highlights the strategic importance of the engine and the confidence Pratt & Whitney has in meeting the long‑term needs of the F‑35 program.
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