Xwing Aims To Usher In The Era Of Autonomous Flight Sooner By Robotizing Small, Old Cargo Planes The San Francisco-based startup claims to have pulled off the first fully autonomous flight of a Cessna 208B Grand Caravan, a small workhorse cargo plane, and it’s hoping to win approval from the FAA to launch commercial cargo deliveries with unmanned Grand Caravans over unpopulated areas in 2022.