This flight test, powered by alternative jet fuel, comes on the heels of engine ground testing completed earlier this year at Arnold Engineering Development Center in Tennessee.

These tests directly support the U.S. Air Force's goal of acquiring half of its domestic jet fuel requirements from alternate sources by 2016. Pratt and Whitney is a United Technologies Corp. company.

This is Pratt and Whitney's second military engine to successfully complete ground and flight tests using biofuels. A C-17 Globemaster III, powered exclusively by four Pratt and Whitney F117 engines, completed testing in August. Similar tests are planned for the F119 in the near future.

"We are pleased with the performance of our military engines using alternate jet fuels during ground and flight tests," said Bev Deachin, vice president, Military Programs and Customer Support, Pratt and Whitney.

"These successful tests are in direct support of our U.S. Air Force customer's goal to acquire and use alternate jet fuel sources for its fleet."

The flight tests blended Hydrotreated Renewable Jet (HRJ), an eco-friendly alternative from sources including animal fats or plant extracts such as camelina, with traditional JP-8 jet fuel.

Ground testing also included a blend of JP-8 jet fuel, HRJ, and a synthetic fuel made from coal. Pratt and Whitney

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