Falcon 9 B1050 was a reusable first-stage booster for the orbital-class Falcon 9 vehicle manufactured by SpaceX. It launched on December 5, 2018.[1][2] A grid fin malfunction occurred shortly after the entry burn, resulting in the booster performing a controlled landing in the ocean.[3]
Following this anomaly on its maiden and only flight, B1050 was scrapped for parts. It is believed its cold gas thrusters, as well as some of its electronics, were used for SpaceX's Starhopper prototype.