ARNOLD AIR FORCE BASE: The Pratt & Whitney F135 engine has returned to Arnold Engineering Development Complex for another round of testing, with a fresh engine component the focus of the latest efforts. The F135, which powers the F-35 Lightning II aircraft, is currently undergoing testing in one of the Sea Level Test Cells at […]

DefenceTalkThe U.S. Department of Defense and Pratt & Whitney have reached an agreement in principle for a production contract for F135 propulsion systems to power the F-35 Lightning II. The low rate initial production (LRIP) contract would cover the fifth lot of engines, including program management, engineering support, production non-recurring effort, sustainment and spare parts. […]https://www.defencetalk.com/f-35-program-office-details-lrip-5-engine-agreement-46699/