Gulfstream Aerospace Corp. has become the first business aviation company to successfully complete a high-altitude flight test campaign demonstrating the potential for 100% neat sustainable aviation fuel (SAF) to reduce contrail-forming particle emissions at altitudes up to 50,000 feet.  The campaign marks the first 100% SAF flight for the Gulfstream G800 and Pearl 700 engine. The aircraft was paired with a specially modified Gulfstream G700, transformed into a flying emissions measurement laboratory.