Pratt & Whitney's F135 Program Achieves 5,000-hr. SDD Ground-Testing Mark
Pratt & Whitney's F135 engine program has met the more-than-5,000-hr. System Development and Demonstration ground-testing mark and is on schedule for the first flight of the F-35 Joint Strike Fighter this fall. The 5,000 SDD hr. are in addition to the more than 3,600 hr. accumulated during the...
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