The United States Navy reports a test flight by a MH60S Sea Hawk helicopter, powered by fuel blended with 50% camelina-based biofuel. Camelina is a plant, belonging to the family that includes rapeseed and mustard. It is considered a "second generation biofuel feetstock". The helicopter test flight is part of an effort by the US Navy to decrease its need for petroleum-based fuels. Earlier this year, they flight-tested the biofuel blend on an F/A-18 Super Hornet, and found that "the aircraft performed as expected through its full flight envelope with no degradation of capability". The present test flight is reported to be "another step toward the certification of fuels from non-petroleum sources for use in all Navy and Marine Corps aircraft". There are plans to test the camelina biofuel on additional aircraft models in 2011 with a target of approving the 50% biofuel blend in navy ships and aircraft by 2012.