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PRESS RELEASE

Pratt & Whitney Canada Celebrates 500th PW308C Delivery to Dassault Aviation

GENEVA, Switzerland, Tuesday, May 4, 2010

Pratt & Whitney Canada (P&WC) today celebrated the delivery of its 500th PW308C turbofan engine to France's Dassault Aviation, a major player in the mid- to large-size business aircraft market. Pratt & Whitney Canada is a United Technologies Corp. (NYSE: UTX) company.

Pratt & Whitney Canada held a special ceremony during the 10th annual European Business Aviation Convention and Exhibition (EBACE) in Geneva, Switzerland, to honour the milestone delivery, reached in March 2010. "This is a tremendous achievement and attests to the success of the PW308C-powered Falcon 2000DX/EX/LX business jet," said Michael Perodeau, Vice President, Corporate Aviation and Military Programs, P&WC. "This delivery also underscores the close relationship that has developed between Pratt & Whitney Canada and Dassault Aviation over the past decade and resulted in bringing high-performance and fuel-efficient products to market."

Dassault Aviation selected the PW308C for the Falcon 2000EX jet in 1999 and later picked the PW307A to power its Falcon 7X three-engine business jet, marking the extension of a growing business collaboration between the company and P&WC. The PW308C, a member of the popular PW300 family of engines, is rated at 7,000lbs thrust (ISA + 23C) and has accumulated more than 550,000 flight hours in service on the Falcon fleet. The PW300 engine family today powers 1,321 business jets in 71 countries and has accumulated a total of 8.5 million flight hours.

About Pratt & Whitney Canada

Pratt & Whitney Canada, based in Longueuil, Quebec, is a world leader in the design, manufacture and service of aircraft engines powering business, general aviation and regional aircraft and helicopters. The company also manufactures auxiliary power units and industrial gas turbines. United Technologies Corp., based in Hartford, Conn., United States, is a diversified company providing high technology products and services to the global aerospace and building industries.

Pratt & Whitney Canada goes the extra mile to keep its customers flying. It now counts more than 10,000 operators around the world, with new-generation engines, green technology, and unmatched support. Customers can rely on more than 30 company-owned and designated service facilities, a 24/7 Customer First Centre for expert and rapid assistance, and an extensive parts distribution network to deliver unmatched front-line service. Pratt & Whitney Canada's comprehensive service portfolio includes: field support representatives on all continents; mobile repair teams available around the clock; an extensive parts distribution network that grows every year; the largest pool of P&WC rental and exchange engines in the industry; an industry-leading Eagle Service Plan; a customized Fleet Management Program; and the most comprehensive warranty coverage in the industry.