The U.S. Dept. of Defense made a $2.88-billion award to Pratt & Whitney in a modification to a prior contract for manufacturing 141 more F135 engines. Those engines are the power source for the F-35 ...

PARIS—A key milestone for the Pentagon’s program to upgrade the F-35 engine has been pushed back a year, raising questions about the overall timeline of the effort. The engine upgrade will reach ...

The F-35 program is delaying some of its planned Block 4 upgrades as it focuses on delivering capabilities as early as 2031. (A1C Eli Rose/Air Force) The F-35 Joint Strike Fighter program is scaling ...

The $2.8B contract funds 141 F135 engines for U.S. services and allies, securing production, spares, and upgrades through February 2028. Pratt & Whitney has been awarded a major contract, valued at ...

President Trump described the F-55 as a substantial upgrade over the F-35, together with the ongoing upgrades to F-35 and F-22. U.S. President Donald Trump is currently on a tour in the Middle East, ...

The F-35 Joint Strike Fighter program is scaling back its ambitions for a slate of upgrades called Block 4, the Government Accountability Office said Wednesday, as the aircraft struggles with ...