Lockheed F-35’s Reliability Found Wanting in Shipboard Testing

The Marine Corps’ version of Lockheed Martin Corp.’s F-35 fighter demonstrated poor reliability in a 12-day exercise at sea, according to the U.S. military’s top testing officer.

Six F-35Bs, the most complex version of the Pentagon’s costliest weapons system, were available for flights only half of the time needed, Michael Gilmore, the Defense Department’s director of operational testing, said in a memo obtained by Bloomberg News. A Marine Corps spokesman said the readiness rate was more than 65 percent.

While the exercise on the amphibious assault ship USS Wasp resulted in useful training for Marines and Navy personnel, Gilmore wrote in the assessment dated July 22, it also documented that “shipboard reliability” and maintenance “were likely to present significant near-term challenges.”

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