Gulfstream have successfully completed the first test flight of its G500 business jet. The successful two-hour-and-16-minute maiden test flight from its Savannah, Ga. base landed at 12:55 p.m. local time, and is the result of close-on three years of testing and cabin selection and outfitting ahead of its. A Gulfstream spokeswoman said The Gulfstream G500 business jet, ...