UPDATE: Virgin Orbit will attempt a launch on Monday between 10 a.m. and 2 p.m. PDT.
Virgin Orbit has scrubbed the maiden flight of its LauncherOne booster that had been planned for Sunday over the Pacific Ocean.
The company tweeted that engineers discovered a problem with a sensor after fueling the booster at the Mojave Air and Space Port in California, They drained the fuel and are addressing the problem.
Virgin Galactic has a backup launch date on Monday from 10 a.m. to 2 p.m. The company has not yet confirmed that it will attempt a launch tomorrow.
LauncherOne will attempt to place an inert mass into orbit.
Ken Brown and I will be in Mojave to cover the takeoff and landing of the Cosmic Girl Boeing 747 aircraft.