Stratos 716X Development Well Underway Another Very Light Jet (VLJ) that is in development at the moment and quietly so is the Stratos 716X. This aircraft has been steadily moving forward with its development having completed load-testing and now in the phas of assembling the first working aircraft prototype for flight testing. The first flight is carded for the second-half of 2020. It is essentially a slightly larger version of the Stratos 714 'proof-of-concept'. The Stratos 716X is wider in the cabin and will seat six in its carbon fiber structure.