Lockheed F-35's Cost Could Rise by $1 Billion Because of Extra Testing

  • GAO urges against ‘significant new investments’ until then
  • Pentagon sees five-month slip and $532 million in costs

Trump: We Cut Approximately $600 Million From F-35

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Flight testing of Lockheed Martin Corp.’s F-35, the Pentagon’s costliest program, will take about a year to complete and require at least $1 billion more than planned, Congress’s watchdog agency said.

Citing “cascading testing delays,” the Government Accountability Office said issued Monday that the remaining 10 percent of the development phase should be completed before the Defense Department makes “significant new investments” in the fighter jet.