RTX subsidiary Pratt & Whitney has secured a nearly $1.3-billion undefinitized contract to supply spare parts and support equipment for F135 engines powering US and international F-35 fighter jets.
The agreement covers replacement engine components, deployable spare packages, depot inventory, and related support equipment for fiscal year 2026 requirements.
Pratt & Whitney’s F135 sustainment enterprise supports a worldwide network of maintenance depots, 42 bases, and 13 ships, providing maintenance, logistics, and technical support for F-35 operators worldwide.
The award follows a similar $1.6-billion contract issued in December, underscoring continued investment in keeping the global F-35 fleet mission-ready.
“Ensuring the F135 remains mission-ready is critical to the success of the F-35 enterprise,” vice president of Pratt & Whitney’s F135 Program Chris Johnson said.
“This contract will help strengthen our global sustainment network to ensure operators around the world can continue to rely on the F135’s unmatched performance.”
F135 Powerplant
The F135 is an afterburning turbofan engine derived from the F119 that powers the F-22 Raptor. It equips all three F-35 variants, delivering about 115,000 horsepower and enabling the fighter to reach speeds of up to Mach 1.6 (1,228 miles/1,976 kilometers per hour).
Pratt & Whitney has delivered more than 1,500 F135 engines to operators in 20 allied nations. The upcoming F135 Engine Core Upgrade (ECU) will leverage the existing sustainment network to improve fleet readiness and provide a cost-effective propulsion modernization solution.
Designed to support the F-35’s Block 4 modernization, the ECU will enhance engine durability, power, and thermal management. Compatible with all F-35 variants, it will enable next-generation weapons and sensors while helping keep the fighter combat-ready for decades.
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