EDWARDS AIR FORCE BASE, Calif. (AFNS) -- The Air Force's ongoing alternative fuels certification efforts reached a new milestone Aug. 27 when a C-17 Globemaster III from here flew on all engines using jet fuel blended with a combination of traditional petroleum-based fuel, or JP-8, biofuel derived in part from animal fat, and synthetic fuel derived from coal.

The 418th Flight Test Squadron here conducted the flight tests Aug. 23 to 27.

The flight was a first for any Department of Defense aircraft where a 50 percent mix of JP-8 was blended with 25 percent renewable biofuel and 25 percent fuel derived from the Fischer-Tropsch process, which is essentially liquified coal or natural gas.

It was also the first time an aircraft from Edwards Air Force Base had used fuel derived from beef tallow, which is essentially waste animal fat.

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