Space plane: Gigantic Stratolaunch aircraft makes second test flight 30 Apr, 2021 03:43 AM Quick Read The Stratolaunch aircraft, a six-engine jet with the world's longest wingspan, lands at Mojave Air and Space Port. Photo / AP The Stratolaunch aircraft, a six-engine jet with the world's longest wingspan, lands at Mojave Air and Space Port. Photo / AP Other The gigantic Stratolaunch aircraft has flown for the second time, taking to the skies over the Southern California desert on Thursday (local time). The six-engine jet with the world's longest wingspan took off from Mojave Air and Space Port two years after its maiden flight, following a change in ownership and purpose.