Continental Airlines is planning flight tests using aircraft powered by biofuel rather than traditional Jet-A1. On January 7, 2009, Continental partnered with GE Aviation to conduct a biofuel demonstration flight, making the airline the first U.S. carrier to conduct tests using biofuels. The test bed, a Boeing 737-800 (registered as N76516), ran one of its engines on a mix of 50% kerosene, 6% algae, and 44% jatropha, a weed that bears oil producing seeds. The engine running partly on biofuel burned 46 kg less fuel than the conventional engine in 1 and a half hours while producing more thrust using the same volume of fuel. Continental's CEO, Larry Kellner, commented "This is a good step forward, an opportunity to really make a difference to the environment" citing jatropha's 50–60% lower CO2 emissions as opposed to Jet-A1 in its lifecycle.