WASHINGTON, Nov. 17 (UPI) -- Pentagon testers for the F-35C reported a crack on the wing spar of a test aircraft, prompting contractor engineers to formulate a solution.
The cracks were discovered on a heavily tested plane in a main structural element on the C-variant of the Lockheed Martin-made F-35 Lightning II, which is for use on U.S. Navy aircraft carriers. The damage is not expected to affect the current flight operations for any of the variants currently in service for the U.S. military, however the cost of retrofits are not yet known.