Sikorsky awarded $435 million contract for four CH-53K test aircraft

The US Navy is awarding Sikorsky a $435 million contract modification to build four more CH-53K prototype helicopters for operational evaluation purposes.
Instead of awarding a separate contract for the four system demonstration test articles, the Naval Air Systems Command has decided to add the machines to an existing $3.5 billion system development and demonstration contract that was awarded in April 2006.
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