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PRESS RELEASE

Pratt & Whitney’s F135 Engine Exceeds 20,000 Hours Powering the F-35

SINGAPORE AIR SHOW, Tuesday, February 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. Pratt & Whitney is a United Technologies Corp. (NYSE:UTX) company.

“The F135-powered F-35 had an extraordinary 2011 in flight test, completing nearly 1,000 flights and powering the successful STOVL shipboard trials, and it is on track for an even better 2012,” said Bennett Croswell, president of Military Engines, Pratt & Whitney. “The combination of 20,000 hours of flight and ground testing demonstrates the maturity and dependable performance of our F135 engine, providing single engine safety to our customers in the U.S. and around the world.”

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.

“We are meeting our affordability targets and our engines are a stable, production configuration ready to power all three F-35 variants through testing, training and operational introduction as the program progresses,” said Croswell. Pratt & Whitney has designed, developed and tested the F135 to deliver the most advanced fifth-generation fighter engine for the United States and its allies around the world. It has been further enhanced with technologies developed in several Air Force and Navy programs.

About Pratt & Whitney

Pratt & Whitney is a world leader in the design, manufacture and service of aircraft engines, space propulsion systems and industrial gas turbines. United Technologies, based in Hartford, Conn., is a diversified company providing high technology products and services to the global aerospace and building industries.

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This press release contains forward-looking statements concerning future business opportunities and operational engine performance. Actual results may differ materially from those projected as a result of certain risks and uncertainties, including but not limited to changes in funding related to the F-35 aircraft and F135 engines, changes in government procurement priorities and practices or in the number of aircraft to be built; challenges in the design, development, production and support of advanced technologies; as well as other risks and uncertainties, including but not limited to those detailed from time to time in United Technologies Corp.'s Securities and Exchange Commission filings.