Photos: Solar-powered plane attempts record flight

Technicians prepare the Solar Impulse 2 solar-powered plane July 24, 2016, at Cairo’s International Airport in Egypt before it takes off for Abu Dhabi on the final leg of its world tour.

In this photo provided by Solar Impulse 2, the solar powered plane, piloted by Swiss pioneer Bertrand Piccard, takes off from John F. Kennedy International Airport in New York on June 20, 2016, on its way to Southern Spain.

In this photo released by Jean Revillard/SI2, solar-powered airplane Solar Impulse 2, piloted by Swiss adventurer Andre Borschberg flies over the Statue of Libery in in New York on June 11, 2016, shortly before landing at John F. Kennedy International Airport.

In this photo released by Jean Revillard/SI2, solar-powered airplane Solar Impulse 2, piloted by Swiss adventurer Andre Borschberg, approaches Manhattan as it flies near the Statue of Libery, left, in New York on June 11, 2016, shortly before landing at John F. Kennedy International Airport.

Solar Impulse 2, the solar airplane of Swiss pioneers Bertrand Piccard and Andre Borschberg, moves through the sky shortly after the take off from Dayton International Airport, in Dayton, Ohio to Lehigh Valley International Airport in Allentown, Pa., on Wednesday, May 25, 2016.

Swiss founders and pilots Bertrand Piccard, left, and André Borschberg exit their experimental solar-powered aircraft after landing in Dayton, Ohio, on May 21, 2016.

Members of the ground crew are lifted off the ground as the wind begins to move the Swiss-made Solar Impulse 2 plane, Monday, May 2, 2016, in Goodyear, Ariz.

Pilot Andre Borschberg sits in the cockpit of the Solar Impulse 2, as his son, Teo Borschberg, prepares the solar powered plane at Moffett Field in Mountain View, Calif., before dawn Monday, May 2, 2016.

Pilot Andre Borschberg sits in the cockpit of the Swiss-made Solar Impulse 2 plane, Monday, May 2, 2016, in Goodyear, Ariz.

Grounds crew pull pilot Andre Borschberg and the Swiss-made Solar Impulse 2 plane to the hanger after landing, Monday, May 2, 2016, in Goodyear, Ariz.

Pilot Andre Borschberg, left, and pilot Bertrand Piccard walk together after Borschberg exited the cockpit of the Swiss-made Solar Impulse 2 plane, Monday, May 2, 2016, in Goodyear, Ariz.

In this April 23, 2016 file photo, Solar Impulse 2 flies over the Golden Gate Bridge in San Francisco at the end of its journey from Hawaii, part of its attempt to circumnavigate the globe.

Solar Impulse 2 flies over San Francisco on Saturday, April 23, 2016. The solar-powered airplane, which is attempting to circumnavigate the globe to promote clean energy and the spirit of innovation, arrived from Hawaii after a three-day journey across the Pacific Ocean.

The Solar Impulse 2, a solar-powered airplane, circles the Kalaeloa Airport on July 3, 2015, in Kapolei, HI.

Solar Impulse 2’s mobile hanger opens for its possible flight from Nagoya airport in Nagoya on June 23, 2015.

Nagoya Airport ground crew gather around the Solar Impulse 2 as it lands the airport in Toyoyama, near Nagoya, central Japan, Monday, June 1, 2015.

The Solar Impulse 2 undergoes maintainance in a hangar in Lukou International Airport in Nanjing, China, on April 22, 2015.   (AFP/Getty Images)

Swiss pilots Andre Borschberg, left, and Bertrand Piccard of Solar Impulse 2, the world’s only solar-powered aircraft, talk to reporters before taking off at the Mandalay International Airport in Myanmar on March 30, 2015.   (Ye Aung Thu, AFP/Getty Images)

Solar Impulse 2, the world’s only solar-powered aircraft, takes off from the Sardar Vallabhbhai Patel International Airport in Ahmedabad, India, on March 18, 2015.   (Sam Panthaky, AFP/Getty Images)

Solar Impulse 2, the world’s only solar-powered aircraft, takes off from the Sardar Vallabhbhai Patel International Airport in Ahmedabad, India, on March 18, 2015.   (Sam Panthaky, AFP/Getty Images)

Swiss pilot Bertrand Piccard, left, jokes with co-pilot Andre Borschberg before flying the Solar Impulse 2 from Abu Dhabi, United Arab Emirates, on March 9, 2015, in the first attempt to fly around the world using solar energy.   (Marwan Naamani, AFP/Getty Images)

Technicians work at a control center monitoring the Solar Impulse 2 solar-powered aircraft in Monaco on March 9, 2015.   (Valery Hache, AFP/Getty Images)