Virgin Galactic executives said they expect to fly their VMS Eve aircraft up to 125 times a year once the company starts commercial service of the Delta spaceplanes, the successor to the existing VSS Unity, in 2026. “The planned increase in flight cadence for our mothership Eve is a game changer when our first two Delta ships enter commercial service,” added Doug Ahrens, chief financial officer of Virgin Galactic. That is a lot to ask of what was originally a developmental aircraft, which started flights in 2008. Eve was never intended to fly this many times, and it seems likely that refurbishment of the plane between launches could become a major bottleneck for Virgin Galactic as it seeks to scale up operations.