More than a year after the odyssey began, the Swiss-led Solar Impulse project is ready to resume its round-the-world, solar-powered airplane flight in Hawaii on April 21.
Takeoff is set for 3 p.m. GMT (8 a.m. PT, 5 a.m. Hawaii time), the team tweeted.
The five-day, five-night nonstop flight across the Pacific to Hawaii took a heavy toll on the plane’s batteries, however. The system overheated, and it took several months to make the repairs. The team also had to wait for reliably good weather to return.
This week, the leaders of the $150 million effort said it was finally time to fly.