EAST HARTFORD, CT, Aug 27, 2025 – Pratt & Whitney has received a $2.8 billion undefinitized contract (UCA) to produce Lot 18 F135 engines, a critical power source for all three variants of the F-35 Lightning II 5th generation fighter jets.
The contract funds production of F135 engines in three variants: conventional takeoff and landing (CTOL), carrier variant (CV), and short take-off and vertical landing (STOVL). It also includes spare engines and modules, program management, tooling, engineering, and production support for U.S. and international customers.
“The combat-proven F135 engine delivers the power, safety, reliability, and low-observability to ensure operators can accomplish their most critical missions. The F135 is ultimately an investment in mission assurance, providing the warfighters of today and tomorrow the technological edge to fight and win,” said Christopher K. Johnson, Pratt & Whitney’s vice president for the F135 program. “This contract will enable our team to continue providing this critical capability to help the U.S. and its allies maintain air superiority for decades to come.”
The F135 program supports more than 67,000 domestic jobs and 240 U.S. suppliers, and contributed about $9.1 billion to the U.S. economy in 2024.
Pratt & Whitney has delivered more than 1,300 F135 production engines to customers in 20 allied nations.
Source: Pratt & Whitney
About Pratt & Whitney
Pratt & Whitney, founded in 1925, is an aerospace manufacturer based in East Hartford, CT, and part of RTX Corp. The company designs, builds, and services aircraft engines and auxiliary power units for commercial and military aviation, as well as gas turbines for industrial, marine, and power generation uses. More than 90,000 of its engines are in service across 200 countries, supporting about 17,000 customers worldwide. In 2024, Pratt & Whitney reported revenue of about $28B. Its customers include airlines, the U.S. military, international air forces, commercial and regional aircraft operators, and industrial users of gas turbine power.