Aviation News – Pratt & Whitney, an RTX business, has been awarded a $2.8 billion undefinitized contract action (UCA) to produce Lot 18 of F135 engines, powering all three variants of the F-35 Lightning II fighter aircraft. This award reinforces the company’s pivotal role in sustaining and advancing the global F-35 program.
The contract, announced on August 26, 2025, in East Hartford, Conn., covers the next production lot of F135 propulsion systems for the 5th generation F-35 fleet. The F135 engine, developed by Pratt & Whitney, has been a cornerstone of the program since its inception, delivering unmatched power, reliability, and operational readiness for air forces worldwide.
Key Benefits:
Supports ongoing production of the world’s most advanced fighter aircraft
Ensures reliable propulsion for all F-35 variants (A, B, and C)
Strengthens U.S. and allied air combat capabilities
Drives innovation in advanced military propulsion technology
The F135 engine provides superior thrust, advanced stealth compatibility, and high durability while reducing life-cycle costs for operators. This latest production lot will sustain global F-35 operations and ensure fleets remain mission-ready for decades to come.
“This contract highlights the enduring trust placed in Pratt & Whitney by our U.S. and international partners,” said [Spokesperson Name], [Title] at Pratt & Whitney. “We remain committed to delivering world-class propulsion solutions that empower the F-35 to achieve its full potential in any operational environment.”
Looking ahead, the Lot 18 contract underpins the future of the F-35 program by ensuring a steady flow of engines to meet growing global demand. It reflects continued investment in cutting-edge defense technology to maintain air dominance in an evolving threat landscape.
Pratt & Whitney’s F135 program continues to drive the F-35’s unmatched performance, ensuring its operators have the capabilities they need now and well into the future.
Photo Rob Vogelaar
