(Fortune) Software glitches continue to dog the nation's newest fighter jet.
Five of six Air Force F-35 fighter jets were unable to take off during a recent exercise due to software bugs that continue to hamstring the world’s most sophisticated—and most expensive—warplane.
During a mock deployment at Mountain Home Air Force Base in Idaho, just one of the $100 million Lockheed Martin F-35s was able to boot its software successfully and get itself airborne during an exercise designed to test the readiness of the F-35, FlightGlobal reports. Nonetheless, the Air Force plans to declare its F-35s combat-ready later this year.
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Details surrounding the failed exercise were disclosed earlier this week in written testimony presented to Congress by J. Michael Gilmore, the Pentagon’s chief weapons tester.