LOS ANGELES (MCT) — The radar-evading F-35 fighter jet, a nearly $400 billion weapons program under development for more than a decade, is facing its worst turbulence since Washington decided to buy it in 2001 — when it was billed as the most affordable, lethal and survivable military aircraft ever built for the U.S. and its allies.

At a time when federal spending is under a microscope, the plan to develop and build 2,443 airplanes is hundreds of billions of dollars over budget. The F-35, known as the Joint Strike Fighter, has been delayed by glitches in its onboard computer systems, cracks in structural components and troubles with its electrical system.