Pratt & Whitney F100 Engine Exceeds 21 Million Flight Hours

PARIS AIR SHOW, PARIS, France, June 18, 2007 – The Pratt & Whitney F100 engine family – which includes the PW-100, -200, -220 and -229 engines – recently exceeded 21 million operational flight hours. The F100 engine powers the F-16 and F-15 military fighter jets operated by the U.S. Air Force, U.S. Navy, and air forces in 21 nations. Pratt & Whitney is a United Technologies Corp. (NYSE:UTX) company.

“The F100 propulsion system provides air forces around the world with superior performance, dependability and maintainability,” said Warren Boley, vice president, operational military engines, Pratt & Whitney. “We continue to develop significant performance and reliability improvements for all models of the F100 to support our customers’ mission readiness.”

The F100 engine, still in production, entered service in 1974 and is expected to remain operational through 2035. Pratt & Whitney currently has firm orders for more than a hundred F100 engines.

Pratt & Whitney military engines include the F100 that powers the F-16 and F-15; the F135 for the F-35 Lightning II; F119 for the F-22 Raptor; F117 for the C-17 Globemaster III; J52 for the EA-6B Prowler; TF33 powering AWACS, Joint STARS, B-52, and KC-135 aircraft; TF30 for the F-111; PT6 for T-6A and UH-1N aircraft; and JT15 for the T-1A trainer.

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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© 2007, United Technologies Corp. - Pratt & Whitney

This press release contains forward-looking statements concerning future business opportunities. Actual results may differ materially from those projected as a result of certain risks and uncertainties, including but not limited to 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 Corporation's Securities and Exchange Commission filings.

Heather Summerer
Pratt & Whitney Military Engines
U.S. Office: +1.860.565.0557
heather.summerer@pw.utc.com

Jennifer Whitlow
Pratt & Whitney
Int’l Mobile: +1.860.214.750
jennifer.whitlow@pw.utc.com