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PRESS RELEASE

Pratt & Whitney's F100-229 Engine Enhancement Package Completes Record-Breaking Accelerated Mission Test

EAST HARTFORD, Conn., Monday, November 15, 2010

Pratt & Whitney's newest member of the F100 engine family, the F100-PW-229 Engine Enhancement Package (EEP), has successfully completed more than 6,000 total accumulated cycles (TACs) in an accelerated mission test (AMT) at the U.S. Air Force's Arnold Engine Development Center in Tennessee. This year's long test was specifically designed to demonstrate the new engine's capabilities to provide dependable operation and significantly reduce life-cycle-costs for our customers. Pratt & Whitney is a United Technologies Corp. (NYSE:UTX) company.

"The conditions the engine experienced throughout this test represent the outer edge of the operating environment," said Mark Buongiorno, director of F100 Programs, Pratt & Whitney. "It would take the average engine 10,000 TACs, or more than 25 years of operation, to experience the same levels of time and temperature exposure built into this test plan. Furthermore, the EEP engine ran the duration of the test flawlessly, without having to replace any of the turbo machinery. Completing this benchmark test, ahead of schedule and within budget, is a great accomplishment for the Pratt & Whitney and U.S. Air Force team."

The F100-PW-229 is designed to extend the periodic engine inspection requirement from 4,300 to 6,000 cycles, eliminating one out of every three overhaul cycles. This increase in time between overhauls provides our customers with significantly reduced maintenance and life cycle costs, which will save hundreds of millions of dollars, at a time when value and efficiency are top priorities. The F100-PW-229 EEP engine is available as a complete engine or can be easily incorporated into existing customers' engines during their normal overhaul cycle.

The F100-PW-229 EEP represents the latest evolution in the F100 series of engines, recognized worldwide for its safety, reliability and cost effective operation. Pratt & Whitney's F100 engine family powers F-16 and F-15 military fighter jets operated by the U.S. Air Force, U.S. Navy and the Air Forces of 22 allied nations. The F100-PW-229 EEP incorporates groundbreaking technology developed for the F135 and F119 propulsion systems, the world's only fifth-generation fighter jet engines.

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 commercial building industries.

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