2009, its president Solar Flight K. Eric Raymond flew with the solar-electric airplane of Sunseeker II over the Alps several times. 
This August, he dared the same trip with his first two-seater Sunseeker Duo, which allowed him to take his wife Irena along as co-pilot.
The Raymonds started from base in Voghera, Italy on August 2 and began heading to Torino Aeritalia Airport. The next day, they flew to the Swiss mountain Mönch, and then landed at Munster-Geschinen Airport in Switzerland.
On August 7, they took off again and flew back to Voghera via the Matterhorn and the city of Genoa.
The taxiThe return trip took four hours, and the pair reached a maximum altitude of 4.545 meters. They report that they could have flown higher if the plane had a double system oxygen.
The solar aircraft has a wingspan of 22 meters and weighs 280 kilograms. Sta wings it has 1.510 solar panels gathering it energy of the sun to store it in a battery of lithium located in the spindle.
The aircraft engine has a maximum power of 25kW.
It was the first solar-powered aircraft that managed to fly with two people.
