F-35 Lightning II
Coverage of F-35 Lightning II in the Nexus archive.
- Only a quarter of US F-35s were fully mission-capable last year as maintenance and parts problems dragged down readiness, watchdog reports
A new report reveals only 25% of US F-35 fighters were fully mission-capable last year due to maintenance and spare parts issues, with readiness rates declining from 67% to 44% between 2021 and 2025. The Pentagon's $13.7 billion readiness plan faces risks like contractor reliance and cost gaps, as the F-35 program's total costs now exceed $2 trillion.
- Only 1 in 4 F-35s is fully mission capable, GAO finds
The F-35 Lightning II fleet's full mission capable rate dropped to 25% in fiscal 2025, down from 38% in 2021, due to software delays, parts shortages, and corrosion. The F-35 Joint Program Office's Global Support Solution Reset aims to improve readiness by 2030 but requires an additional $13.7 billion, with risks including private sector capacity constraints and potential funding gaps.