NASA has completed an exhaustive review of software problems and procedural oversights that prevented an unpiloted Boeing Starliner capsule from docking with the space station last year. The agency is implementing 80 recommendations to clear the way for a second test flight later this year and, if all goes well, Boeing’s first piloted flight next spring, officials said Tuesday.

SpaceX’s 19th Dragon resupply mission to the International Space Station ended Tuesday with the capsule’s splashdown in the Pacific Ocean southwest of Los Angeles with nearly 3,600 pounds of cargo and experiments.

United Launch Alliance teams ran through an 11-hour countdown Friday at Cape Canaveral to rehearse procedures before the first flight of a modified Atlas 5 rocket with Boeing’s Starliner crew capsule Dec. 20.