Pratt & Whitney awarded $54 million contract for F135 engine engineering fixes
RTX Corp.'s Pratt & Whitney Military Engines division has received a $54 million U.S. Navy order to perform non-recurring engineering work on the F135 engine, which powers all variants of the F-35 Lightning II stealth fighter. The fixed-price incentive contract, managed by Naval Air Systems Command, funds design and testing to resolve technical issues including an undersized cooling system, premature turbine blade coating wear, and harmonic resonance vibrations. Work is expected to conclude by December 2028, with 74% performed at Pratt & Whitney's East Hartford headquarters and the remainder across six other U.S. locations. The contract is funded by $14 million in U.S. Fiscal Year 2026 R&D funds and $22.3 million from F-35 Cooperative Program Partners, reflecting allied nations' direct financial role in sustaining the engine. The order supports all U.S. military branches flying the F-35 and allied operators across roughly 20 nations.
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