Key Points and Summary - The F-35 program is under intense pressure due to severe problems with its critical Block 4 modernization. -The new TR-3 hardware, the foundation for the upgrade, is late, ...

Key Points - The F-35 fighter jet program is facing mixed news this week. Pratt & Whitney announced at the Paris Air Show that a planned engine core upgrade has been delayed by a year, with its ...

Add Yahoo as a preferred source to see more of our stories on Google. The F-35 program is delaying some of its planned Block 4 upgrades as it focuses on delivering capabilities as early as 2031. (A1C ...

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 ...

After years of cost growth and schedule delays in its hardware and software modernization effort for the F-35 aircraft, known as Block 4, the Department of Defense (DOD) is in the process of ...

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 ...