Aviation News –
Pratt & Whitney, an RTX business, has been awarded a major $3.8 billion contract modification to produce F135 engines for the F-35 Lightning II. This agreement ensures the continued propulsion supply for all three variants of the world’s most advanced stealth fighter, supporting both the United States and its international allies.
This latest modification definitizes production for Lot 18 and establishes the framework for Lot 19, bringing the total contract value to a staggering $6.6 billion. The deal follows years of development and serves as a critical component of the F-35 program’s effort to scale manufacturing. The selection reinforces Pratt & Whitney’s role as the sole provider of propulsion for the Lockheed Martin-built aircraft, a partnership that has become a cornerstone of modern defense aviation.
The contract covers more than just hardware; it includes full-rate production engines, initial spares, and specialized engineering resources. By securing this agreement now, the U.S. military ensures that manufacturing and supply chain operations remain uninterrupted. This is particularly vital as the global fleet of F-35s expands across Europe and Asia, requiring a robust logistics network to maintain mission readiness on a global scale.
Technically, the F135 is recognized as the most powerful and advanced military engine in operational service, providing the unmatched thrust necessary for stealth and short-takeoff/vertical-landing (STOVL) capabilities. To meet the surge in demand, the company has modernized its production capacity with a $1 billion investment, successfully increasing manufacturing rates by 20%. These operational improvements allow for faster delivery of engine modules and more efficient long-term sustainment.
