Pratt & Whitney

Pratt & Whitney F135 Program Reaches 5,000 SDD Test Hours, Remains on Track to Support JSF's First Flight

EAST HARTFORD, Conn., April 24 -- Pratt & Whitney's F135 engine program has achieved more than 5,000 hours of System Development and Demonstration (SDD) ground testing and is on schedule to support the first flight of the F-35 Joint Strike Fighter (JSF) this fall. The 5,000 SDD hours are in addition to the more than 3,600 hours accumulated during the concept demonstration phase of the F-35...

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