Sources:
http://www.bbc.com/news/technology-33728704
et
http://newsroom.fb.com/news/2015/07/new-milestones-in-connectivity-labs-aircraft-and-laser-programs/
extrait
The drone – which has a wingspan of a Boeing 737 – will operate as high as 90,000 feet in the air, and can stay airborne for 90 days at a time.
