Gulfstream Delivers 400th G650 Family Aircraft The Gulfstream G650 family of aircraft has notched-up a new milestone. The 400th G650 family aircraft was recently delivered to its owner. The landmark G650ER aircraft has been delivered to a U.S-based customer. It was only five years ago that the G650ER derivative entered service. The G650 and its ER variant are both performers. The G650 can fly up to 7,000 nautical miles at Mach 0.85 and 6,000 nautical miles when flying faster at a high-speed cruise of Mach 0.90. The G650ER can fly up to 7,500 nautical miles at the same long-range cruise speed and 6,400 nautical miles 0.90.