
The solar-powered HB-SIA prototype airplane, with Solar Impulse's Chief Executive Officer and pilot Andre Borschberg, is parked after landing on the airport of Geneva during a test flight from its base in Payerne to Geneva International airport, Switzerland on 21 September 2010. EPA/DENIS BALIBOUSE / POOL

Solar Impulse's Chief Executive Officer and pilot Andre Borschberg flies in the solar-powered HB-SIA prototype airplane ahead of the Dents-du-Midi Swiss Alps during a test flight from its base in Payerne to Geneva International airport 21 September 2010. EPA/DOMINIC FAVRE

The solar-powered HB-SIA prototype airplane, with Solar Impulse's Chief Executive Officer and pilot Andre Borschberg, lands on the airport of Geneva during a test flight from its base in Payerne to Geneva International airport, Switzerland on 21 September 2010. EPA/DENIS BALIBOUSE / POOL

The solar-powered HB-SIA prototyp airplane with Solar Impulse's Chief Executive Officer and pilot Andre Borschberg aboard approaches the airport of Zurich-Kloten during a test flight from its base in Payerne to Zurich International airport, Switzerland, on 22 September 2010. EPA/WALTER BIERI

The solar-powered HB-SIA prototype airplane, with Solar Impulse's Chief Executive Officer and pilot Andre Borschberg, is parked after landing on the airport of Geneva during a test flight from its base in Payerne to Geneva International airport, Switzerland on 21 September 2010. EPA/DENIS BALIBOUSE / POOL