Company charts said that in 2021 Air Force deployments, the F-35 achieved an 80 percent full mission capable rate. In the same year, foreign military sales operators of the jet recorded a 90 percent mission capable rate and a 65 percent full mission capable rate. “Full mission capable” means the jet can perform any of its various missions, while mission capable means it is ready to perform at least some of them, as opposed to being down for maintenance. In the most recent Red Flag exercise, out of 250 planned F-35 sorties, none were lost due to maintenance issues, the company reported.
“More than 90 percent of our parts are performing better than expected,” Aylward said.
For operating cost comparisons, Aylward also said the services should assess the reliability of fifth-generation aircraft—the F-22 and F-35—in an “apples to apples” way with fourth-generation airplanes. Whereas fourth-generation aircraft typically are assessed for operating cost without external podded capabilities such as electronic warfare, electro-optical systems, mission planning, and targeting, those features are built into fifth-generation aircraft. Assessing fourth-generation types with all those needed externals included would give a fairer comparison and one that would show that the F-35 is a solid performer, he said.