F-35 Parts From Rolls-Royce 160 Days Late, Pentagon Says

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Rolls-Royce Holdings Plc was an average of 160 days late last year in delivering equipment needed for the U.S. Marine Corps version of the F-35 fighter to hover and land like a helicopter, according to the Pentagon.

The delays for “lift fans” installed on the F-35B, the most complex model of the Joint Strike Fighter made by Lockheed Martin Corp., stemmed from flaws in parts provided by subcontractors, the Defense Contract Management Agency said in an e-mailed statement.