1,100 Test Hour Mark Passed By Gulfstream G700 Program It is only a few days past the one-year anniversary of the first test flight of the Gulfstream G700 program and to date that program has topped 1,100 test hours. February 14th 2020 was the date of the first test flight. With the aircraft due to enter service by the end of 2022, the program appears to be on track to meet this target. Pretty much all the flight test articles to date have been rigorously tested throughout different phases. The next set of tests will involve a focus on the interior and cabin environment. In fact, to this end, there are going to be two test aircraft dedicated to this cause.