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NASA has named astronaut and engineer Christina Koch acting deputy chief engineer, effective Nov. 1, after Katherine Van Hooser retires. The management appointment means Koch will no longer be eligible for future spaceflight assignments.
NASA has named astronaut and engineer Christina Koch acting deputy chief engineer, with the appointment set to begin Nov. 1 after current deputy chief engineer Katherine Van Hooser retires. In the agency-wide role, Koch will help lead NASA’s engineering community and support technical oversight and mission readiness; NASA says she will move to management astronaut status and will no longer be eligible for future spaceflight assignments.
NASA said Koch will support engineering oversight across the agency’s programs and projects, with responsibilities that include mission readiness and maintaining engineering standards. The appointment puts her in a senior technical leadership role drawing on both her earlier career as an engineer and her experience as an astronaut. NASA’s announcement identifies her as acting deputy chief engineer, rather than describing the appointment as permanent.
Koch most recently served as a mission specialist on Artemis II in April, which NASA described as the first crewed flight around the Moon in more than 50 years. Before that mission, she spent 328 consecutive days on the International Space Station, a record NASA identifies as the longest single spaceflight by a woman. She also took part in the first all-female spacewalks.
Van Hooser’s NASA career began in 1991 at Marshall Space Flight Center in Huntsville, Alabama, where she worked in propulsion engineering. She later became chief engineer for the space shuttle main engine, leading engineering work through the program’s final 21 flights, and served as the first chief engineer for the Space Launch System’s Liquid Engines Element. NASA said she became the agency’s deputy chief engineer in 2023 and will conclude more than 35 years of service on Oct. 21.
Koch’s Move Ends Flight Eligibility
The appointment shifts Koch from astronaut operations to agency-wide engineering management. NASA’s statement makes the career consequence explicit: as she moves to management astronaut status, she will not be eligible for future flight assignments. That means the role is not simply an additional administrative duty alongside an active flight career; it marks a change in the work she can be assigned to do.
For NASA, the position provides technical leadership across multiple programs and projects, rather than within a single mission. The agency says the deputy chief engineer helps with technical oversight and readiness, responsibilities tied to the engineering work behind human and robotic missions. Koch’s experience developing systems on the ground and working aboard spacecraft gives her background in both engineering design and flight operations, though NASA has not set out specific projects she will oversee.
The appointment also follows a long-serving engineering leader’s retirement. Van Hooser’s work included propulsion systems for the shuttle and the Space Launch System, linking her career to major launch programs. Koch’s arrival gives the office a new leader as NASA continues work on its lunar and other space programs; the announcement does not, by itself, change the plans or schedules of those missions.
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From Goddard Engineer to NASA Leadership
Koch joined NASA as an electrical engineer at Goddard Space Flight Center in Greenbelt, Maryland, where she developed scientific instruments for space missions. Before being selected as an astronaut in 2013, she also worked in scientific field engineering in Antarctica and the Arctic. NASA says she later held leadership posts in the Astronaut Office and at Johnson Space Center in Houston.
That combination of technical and operational work is central to NASA’s explanation for the appointment. Administrator Jared Isaacman cited her experience both developing complex systems and relying on them in space. NASA Associate Administrator and Chief Engineer Amit Kshatriya also pointed to her engineering expertise, operational experience and leadership. Those assessments are the agency’s stated reasons for selecting Koch, not a published account of a competitive selection process.
Van Hooser’s departure follows a career that spanned propulsion engineering, technical leadership at Marshall and agency-wide oversight. NASA credits her with helping guide engineering work through major program milestones and organizational changes. Her retirement date, Oct. 21, comes before Koch’s Nov. 1 start, leaving the agency to manage the handover between the two dates.
Details of the Handover Remain Limited
NASA’s announcement does not specify which programs or projects Koch will oversee, how duties will be divided within the engineering leadership team, or whether the acting appointment is expected to become permanent. It also does not describe a formal handover plan between Van Hooser’s Oct. 21 departure and Koch’s Nov. 1 start. The stated dates and change in flight eligibility are clear, but further details about the office’s operating arrangements have not been provided.
The release names Artemis II as Koch’s most recent mission and says it took place in April, but offers no additional mission or assignment details in connection with her appointment. NASA has not said how the role will affect specific engineering decisions, schedules or milestones. Any claims about changes to individual missions would go beyond what the announcement confirms.
Koch Starts the Role Nov. 1
Van Hooser is scheduled to conclude her NASA service on Oct. 21, and Koch is scheduled to begin as acting deputy chief engineer on Nov. 1. NASA has not announced a later decision on whether Koch will be considered for the permanent position or provided a timeline for such a decision. The next confirmed milestone is her start date, when she is expected to take on the agency-wide engineering leadership duties described in the announcement.
Further information from NASA could clarify the scope of Koch’s portfolio and how the office will handle technical oversight across its programs. Until the agency provides those details, the confirmed change is a leadership succession accompanied by Koch’s move out of eligibility for future spaceflight assignments.
Key Questions
When does Christina Koch become acting deputy chief engineer?
NASA says Koch’s appointment begins Nov. 1.
Why is Katherine Van Hooser leaving the role?
Van Hooser is retiring after more than 35 years at NASA. The agency says her service will conclude Oct. 21.
Can Koch receive future spaceflight assignments?
NASA says Koch will move to management astronaut status and will no longer be eligible for future spaceflight assignments.
What experience does Koch bring to the position?
NASA cites her work as a Goddard electrical engineer, leadership roles at the agency, her 328-day International Space Station mission and her role on Artemis II.
Has NASA said whether Koch’s acting appointment will become permanent?
No. NASA announced her appointment as acting deputy chief engineer but did not provide a decision or timeline for a permanent appointment.
Source: primary
