The Continental Airlines biofuel flight (designated flight number CO9990) has now landed back at George Bush Intercontinental Airport in Houston. As you can see from the flight path it took above, it spent most of the test over the waters of the Gulf of Mexico, climbing to 38,000 feet where it performed a series of tests before descending to 25,000 feet and then 19,000 feet and 12,000 feet where it conducted more tests. The aircraft is now going to go through another series of tests on the ground before the analysis can begin into how the fuel performed.

Once the results are in, I will bring you another update.

- Flightpath courtesy of the website Flight Aware