Back to Vehicle Families

Boeing CST-100 Starliner

Boeing's CST-100 Starliner is a partially reusable crew-transport spacecraft developed under NASA's Commercial Crew Program. Boeing built three crew modules: Spacecraft 1 for the pad-abort test and reusable Spacecraft 2 and 3 for orbital missions. Three orbital flight tests were completed from 2019 through 2024, but Starliner remains uncertified while NASA and Boeing resolve propulsion, helium-leak, parachute, qualification, and program-management findings. The next planned flight is an uncrewed cargo validation mission whose launch opportunity remains under review.

Boeing CST-100 Starliner
Follow this vehicle family

Future launches and major activity directly linked to this vehicle family.

Identity

Aliases
CST-100CST-100 StarlinerBoeing Starliner
Family Name
Starliner
Full Name
Boeing CST-100 Starliner
Roles
crewed_spacecraft
Status
development
Type
spacecraft

Details

Description
Boeing's CST-100 Starliner is a partially reusable crew-transport spacecraft developed under NASA's Commercial Crew Program. Boeing built three crew modules: Spacecraft 1 for the pad-abort test and reusable Spacecraft 2 and 3 for orbital missions. Three orbital flight tests were completed from 2019 through 2024, but Starliner remains uncertified while NASA and Boeing resolve propulsion, helium-leak, parachute, qualification, and program-management findings. The next planned flight is an uncrewed cargo validation mission whose launch opportunity remains under review.
First Flight Year
2,019
Manufacturer
Operator
Propulsion Configurations
  • Entries
    • Nested value
    Name
    CST-100 Starliner service-module OMAC configuration
    Notes
    Applies only to the operational CST-100 Starliner service-module OMAC system. The 28 service-module RCS thrusters, 12 crew-module RCS thrusters, and four launch-abort engines remain separate or unmodeled until each exact system boundary is independently sourced; no early 24-OMAC test configuration is substituted.
Spacecraft Specs
Reusability
partially_reusable

Links

Assets & Meta

Creation Time
April 26, 2026 at 15:30:34 UTC
Updated Time
August 5, 2026 at 01:55:06 UTC

Other

Search Name
Boeing CST-100 Starliner CST-100 CST-100 Starliner Boeing Starliner