Pratt & Whitney, a division of United Technologies Corp. [UTX], has received a five-year, $2.7 billion contract to repair and overhaul F-117 engines it built for American and foreign C-17 transport aircraft, the U.S. Air Force announced late Oct. 4.

Under the contract, which was not competed, the work will be done at United Airlines [UAL] in San Francisco, Pratt & Whitney’s Columbus Engine Center in Columbus, Ga., and Tinker Air Force Base in Oklahoma City.

About 20 percent of the contract is for foreign military sales and includes Australia, Canada, India, Kuwait, NATO, Qatar, the United Arab Emirates and the United Kingdom.