Nasa classified the manned test flight of the Starliner spacecraft by Boeing as a type A mishap, the most serious level of mission failure. The incident occurred during the June 2024 mission, when the capsule took astronauts Butch Wilmore and Suni Williams to Estação Espacial Internacional (ISS). Múltiplos thrusters failed on approach to the station, compromising the ship’s control and maneuverability. The agency decided to return unmanned Starliner to Terra in September 2024, while the astronauts remained on the ISS and returned nine months later in a SpaceX capsule Crew Dragon.
The 311-page report, released on February 19, 2026, highlights design and engineering deficiencies in the Starliner’s propulsion system. Problemas with thrusters were the main technical factor, although the root cause is still under investigation. The classification as a type A mishap places the event on the same level as historical accidents such as those of the space shuttles Challenger and Columbia, despite the mission having preserved the safety of the crew without human losses.
Criticism of decisions and organizational culture
The administrator of Nasa, Jared Isaacman, pointed out serious leadership failures both at the agency and at Boeing. Ele highlighted that the most concerning problem was not the hardware, but rather decisions and leadership that could create a culture incompatible with human flight. Pressão Cumulative schedule and decision fatigue occurred after more than 30 delayed launch attempts.
Isaacman cited erosion of trust between teams and unprofessional conduct during debates over crew return options. Reuniões became defensive and contentious, affecting the decision-making process while the astronauts remained in orbit.
Technical details of the incident
Starliner launched on June 5, 2024 from Cabo Canaveral, on Flórida. Após the launch, helium leaks and thruster failures appeared during the approach to the ISS. Apesar of the challenges, the capsule successfully docked on July 3, 2024. The decision not to return with a crew prioritized safety, avoiding greater risks.
The report lists 61 recommendations for the next manned mission. The propulsion needs full qualification and corrections to identified deficiencies. Testes representatives of the mission were not previously suitable.
Commitment to corrections and future of Starliner
Nasa remains committed to two commercial crew transportation providers to the ISS, including Boeing and SpaceX. Isaacman stated that there will be no manned flight on Starliner until the technical causes are fully understood and corrected. The agency works on greater transparency and oversight over contractors.
Boeing stated that it is collaborating with Nasa to prepare future missions. The company expressed gratitude for the detailed investigation and reinforced support for the vision of redundancy in access to low orbital space.
Plan for additional testing
Nasa and Boeing are preparing a possible unmanned flight of Starliner in 2026, possibly from April onwards. Esse test aims to validate the corrections implemented in the propulsion system. The focus remains on fully resolving the issues before any astronaut returns.
Experts highlight the complexity of these programs, where organizational flaws often outweigh technical ones in impact. The investigation reinforces the need for accountability in leadership to avoid recurrences.
Independent investigation and recommendations
The independent report concluded that the mission revealed critical vulnerabilities in the propulsion system, Nasa’s oversight model, and the general culture of commercial human flight. Recomendações include improvements in qualification tests and decision-making processes. The agency formally accepted the classification as type A mishap to ensure corrective actions.
Starliner remains part of the Commercial Crew program, with the aim of providing redundant options until the end of the decade, when the ISS will be decommissioned.