P&W's F135 completes successful engine air restart testing

Pratt & Whitney’s F135 engine successfully completed engine restart testing at Edwards Air Force Base, CA. The engine air restart tests are a significant program milestone demonstrating the reliability of the F135 engine in flight. The F135 engine, which is the only fifth generation engine powering the F-35 Lightning II flight test program, was put through a series of 12 engine stops and restarts while in flight.