The Pentagon is battling the clock to fix serious, unreported F-35 problems Defense News exclusively obtained documents detailing the F-35 jet's most serious deficiencies.

Sep 3, 2025 · 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 …

Sep 22, 2023 · GAO’s new report presents a deep dive into the many issues that combine to drag down F-35 availability — particularly in obtaining parts to fix broken jets.

Jul 21, 2024 · RAF FAIRFORD, England — The U.S. military is once again accepting deliveries of the newest F-35 Joint Strike Fighters from Lockheed Martin after a yearlong halt caused by …

Dec 15, 2023 · The F-35 program is warning hardware maturity and software integration issues, as well as problems with concurrency, are creating serious problems for a future …

Jul 16, 2021 · The F-35 Joint Program Office declined to characterize the fighter jet’s remaining seven critical deficiencies, but said in a statement that it has identified and tested fixes for …

Apr 29, 2024 · Grazier said it’s hard to tell whether the reported problems with new F-35s at VMFA-311 are simply a “bad batch” of problematic jets or a sign of a deeper problem.

Jun 12, 2023 · The F-35 Joint Program Office said in a statement to Defense News that the TR-3 delays will in turn disrupt deliveries, causing new fighters to have to be stored in the meantime.

Jul 19, 2023 · Software problems with the F-35's Technology Refresh 3 upgrades prompted the Pentagon to halt deliveries of the newest fighters.

Oct 22, 2024 · The proposed resolution outlines a litany of shortcomings with the F-35, most recently its TR-3 troubles and the delays in future upgrades known as Block 4 that are now …