Atlas 5 • CST-100 Starliner Crew Flight Test

A United Launch Alliance Atlas 5 rocket, designated AV-085, will launch Boeing’s CST-100 Starliner spacecraft on its first mission with astronauts, known as the Crew Test Flight, to the International Space Station. The capsule will dock with the space station, then return to Earth to landing in the Western United States. NASA astronauts Butch Wilmore and Suni Williams will fly on the mission. The rocket will fly in a vehicle configuration with two solid rocket boosters and a dual-engine Centaur upper stage. Delayed from August and 1st Quarter of 2020. Delayed from mid-2020 after Boeing decision to refly the Orbital Flight Test. Delayed from early 2021, June 2021, and late 2021. Delayed from late 2022 to implement fixes on the Starliner spacecraft after OFT-2. Delayed from April 2023, July 2023, April 2024, May 6 and May 10.