Lockheed Martin also previewed its plans for updating existing fighters with the hardware and software upgrades known as Technology Refresh 3.
“They spent years trying to develop a simulator to test [the F-35], and they still can’t deliver that," POGO's Dan Grazier said.
Pratt & Whitney's deliveries of F135 engines are on hold while the U.S. military and contractors try to find the root cause of a Dec. 15 F-35 mishap.
The F-35 Joint Program Office told services a fuel tube failure may have caused an F-35B's crash, which has now led to some fighters being grounded.
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