F135 Exceeds 20,000 Total Engine Hours
SINGAPORE AIR SHOW, Feb. 14, 2012 – Pratt & Whitney’s F135 engine – exclusively powering Lockheed Martin’s fifth-generation F-35 Lightning II – exceeded 20,000 total engine hours while powering the fleet of F-35 flight test aircraft, including 17,700 ground test hours and 2,500 flight test hours. This marks yet another milestone for Pratt & Whitney and its partners.
The F-35 includes three variants to meet the unique needs of the U.S. armed forces as well as the international participants in the program – the Conventional Takeoff and Landing (CTOL), the Carrier Variant (CV) and the Short Takeoff and Vertical Landing (STOVL). To date, the F135 propulsion system has completed more than 1,600 flight tests producing more than 2,500 flight hours and nearly 300 vertical landings. The successes of the F135 engine program validate the reliability, safety and performance of the engine.