[Launch Alert] Sonic Boom Advisory

[Launch Alert]

The following is an advisory from SpaceX:

SpaceX Will Land Falcon 9 First Stage Booster on Land During Upcoming OneWeb Launch 20 mission

SpaceX is targeting Sunday, September 29 for Falcon 9’s launch of the OneWeb Launch 20 mission to low-Earth orbit from Space Launch Complex 4E (SLC-4E) at Vandenberg Space Force Base in California. The window opens at 11:54 p.m. PT. If needed, there is a backup opportunity on Monday, September 30 at 11:49 p.m. PT.

About eight minutes after liftoff, Falcon 9’s first stage will land on SpaceX’s Landing Zone 4 (LZ-4) at Vandenberg Space Force Base, California. There is the possibility that residents of Santa Barbara, San Luis Obispo, and Ventura counties may hear one or more sonic booms during the landing, but what residents experience will depend on weather and other conditions.

SpaceX’s live webcast will begin approximately 10 minutes before Falcon 9’s liftoff at spacex.com/launches.