NASA plans to resume Boeing Starliner missions with an uncrewed flight scheduled no earlier than December, following a 2024 test flight failure that left astronauts Suni Williams and Butch Wilmore stranded at the International Space Station for nine months. The agency will spend an additional $359 million on vehicle upgrades and rocket certification to ensure future crewed transport.
NASA’s Roadmap for Starliner Remediation
NASA administrator Jared Isaacman confirmed that the agency is moving forward with a revised strategy to address the "Type A" mishaps identified during the 2024 test flight. These engineering vulnerabilities, which NASA compared to the Columbia and Challenger disasters, require significant design modifications to the spacecraft’s thrusters.
The upcoming uncrewed mission serves as a validation exercise for these repairs. According to NASA, data gathered from this flight will dictate the timeline for a crewed "Starliner Two" mission, which is currently targeted for mid-2028. Before that crewed flight can proceed, the agency requires specific design changes to the thrusters and the certification of United Launch Alliance’s Vulcan Centaur rockets, as the current Atlas rockets are slated for retirement.
Financial and Operational Stakes for Boeing and SpaceX
The shift toward Starliner comes as NASA faces a narrowing window for crewed access to the International Space Station. SpaceX’s Crew Dragon has served as the only other spacecraft to take US astronauts to the ISS since 2020, but the company has signaled its intent to eventually phase out the platform.
While SpaceX has been awarded $5.92 billion in NASA contracts for its missions, Boeing has received $4.82 billion, excluding the recent $359 million injection for upgrades. NASA officials, including Dana Weigel, manager of the Low Earth Orbit Program, noted that the agency is exploring the possibility of requiring two additional flights from Boeing under the existing contract to bolster station operations.
SpaceX president and chief operating officer Gwynne Shotwell has publicly acknowledged these changes, noting at the All-In Summit that SpaceX intends to sunset older platforms like Dragon to focus on the Starship launch vehicle. Despite these transitions, SpaceX remains the sole operational provider for US crewed flights to the station.
Starliner flight mishap classification and future mission timeline
Why was the 2024 Starliner flight classified as a "Type A" mishap? NASA classified the mission as a "Type A" mishap due to serious engineering vulnerabilities in the spacecraft’s propulsion system, putting it in the same category as the Challenger and Columbia space shuttle disasters.
When will the next crewed Starliner mission occur? NASA is targeting mid-2028 for the next crewed Starliner flight, pending the success of an uncrewed validation mission scheduled for no earlier than December.
Why is NASA investing more money into the Starliner program? The agency is providing an additional $359 million to cover necessary thruster design modifications and the certification of Vulcan Centaur rockets, which will replace the retiring Atlas rockets currently used to launch the capsule.
How does this impact SpaceX’s role at the ISS? SpaceX currently provides the only operational US vehicle for crewed ISS flights. However, the company plans to eventually retire the Crew Dragon platform to prioritize the development of Starship, leading NASA to prioritize Starliner to maintain reliable access to low Earth orbit.
Operational Context
- Mission Duration: The 2024 Starliner mission was originally planned for eight to 14 days but extended to nine months due to propulsion issues.
- Contractual Status: Boeing holds a mandatory order for four flights under its original NASA contract, with discussions ongoing regarding two potential additional flights.
- Future Outlook: The International Space Station is scheduled for decommissioning in the early 2030s, necessitating consistent crew rotations until the end of its operational life.
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