For the first time, Virgin Orbit has strapped its 21-meter rocket to a modified 747 aircraft and taken to the skies. The company performed this “captive-carry” test flight on Sunday in Victorville, located to the northeast of Los Angeles.

“The vehicles flew like a dream today,” Virgin Orbit Chief Pilot Kelly Latimer said in a news release. “Everyone on the flight crew and all of our colleagues on the ground were extremely happy with the data we saw from the instruments on-board the aircraft, in the pylon, and on the rocket itself. From my perspective in the cockpit, the vehicles handled incredibly well, and perfectly matched what we’ve trained for in the simulators.”