GAO: F-35 readiness slips; Pentagon faces $13.7B extra sustainment bill through 2031
A GAO review found the F-35 Joint Strike Fighter’s full mission capable rate fell to just 25% in FY25, with 2025 readiness further degrading as spare parts shortages and other sustainment troubles hinder maintenance. To raise availability, the Pentagon says it needs an additional $13.7 billion through 2031.