By the time astronauts next attempt to dock with Starship in low Earth orbit, a document will exist that says the following about the vehicle they plan to ride down to the lunar surface: it is 171 feet tall, it has a documented risk of tipping over on lunar terrain, and NASA and SpaceX disagree about whether it meets a basic safety requirement for human spaceflight. Nobody outside the two organizations will say what the disagreement is, whether it has been resolved, or what happens if it hasn't by Critical Design Review.
The dispute is in NASA OIG Report IG-26-004, published March 10, 2026. It is the most specific, documented account yet of a safety disagreement inside the Artemis program. The CDR is August 2026.
Those facts are not new. What is new is the mission.
The redesign
NASA Administrator Jared Isaacman announced on February 27, 2026 that Artemis III would no longer attempt a lunar landing. The mission — originally pitched as the first crewed return to the Moon since Apollo — is now a crewed test flight in Earth orbit. Orion will rendezvous and dock with one or both commercial landers in low Earth orbit. The actual surface mission moves to Artemis IV, targeted for early 2028.
The redesign is NASA's answer to a problem the OIG later catalogued in detail: too many firsts, too little margin, and a vehicle that had never been to the Moon attempting a crewed landing with systems that had never operated in mission configuration. The Aerospace Safety Advisory Panel had already flagged the risk posture in February. SpaceX had privately told NASA as early as fall 2025 that the June 2027 crewed landing date was not achievable.
The OIG report, arriving two weeks after the redesign was already set, became its formal codification — not its trigger. But it provides the layer of specificity that the redesign announcement lacked: the vehicle's top identified risk, the specific nature of the manual control dispute, and the oversight gap that allowed both to persist without public knowledge.
Hardware for the redesigned mission is arriving at Kennedy Space Center. SpaceX is fabricating a flight-article Starship HLS cabin at Starbase in Texas, including functional life support, avionics, and crew systems. The vehicle that will attempt its first crewed docking with Orion does not yet have a completed propellant transfer demonstration — that milestone, originally planned for mid-2025, had not occurred as of March 2026 and is now expected sometime in 2026.
The 171-foot problem
Starship HLS, the lunar lander version of SpaceX's Starship, is unlike anything NASA has previously contracted to carry crew. At 171 feet — roughly the height of a 14-story building — it stands taller than the Apollo lunar module by a factor of more than seven. The crew cabin sits at the top, 115 feet above the lunar surface. To get astronauts from the cabin to the ground on the far side of a lunar night in terrain nobody has fully mapped, SpaceX built an elevator.
There is no backup method of egress. "Currently there is no other method for the crew to enter the vehicle from the lunar surface in the event of an elevator failure," the OIG report notes. The elevator itself is not tested on the uncrewed demonstration flight. Neither are the Environmental Control and Life Support Systems, the airlocks, or the full propellant aggregation sequence. NASA officials told the OIG these omissions were "a careful choice based on risk, cost, and schedule."
The tip-over risk appears in the report as a standalone finding: "momentum from landing Starship HLS on the rugged terrain at the Moon's South Pole could cause it to tip over." NASA's HLS program office is tracking it as a "top risk," the OIG document shows. The OIG does not say the vehicle will tip. It says NASA has identified this as the thing most likely to kill astronauts if something goes wrong during landing.
The manual control question
NASA requires that crew vehicles include the option of manual control, not just autonomous control, during all phases of flight. This is a human-rating requirement, not a preference. For Crew Dragon, which ferries crews to the International Space Station, SpaceX received a waiver for manual control. The OIG notes that SpaceX had years of operational experience with the cargo version of Dragon before crew flights — a track record that informed the waiver decision.
Starship HLS will not have that track record at the time of its first crewed landing. SpaceX is building the Starship HLS variant concurrently with Starship itself, which has yet to complete a crewed flight of any kind. "If NASA and SpaceX do not reach a concrete solution prior to CDR," the OIG writes, "it may lock in automation as the only available landing method or result in significant late design changes and increased schedule risk."
The report adds: "In our judgment, this further increases the potential that SpaceX could request a waiver to the manual control requirement to meet the schedule."
Neither NASA nor SpaceX has published the specific content of the manual control requirement, the nature of the disagreement, or the evidence SpaceX has submitted toward closing it. The OIG describes the trend as worsening. The public record ends there.
The February 2026 course correction added an earth-orbital shakedown flight before the first lunar landing — after the OIG completed its work. Whether that structural change alters the manual control calculus is not answered in the report. The OIG also notes that for the uncrewed demonstration, Starship HLS does not need to lift off from the surface under the original contract terms; NASA later added that requirement. The ascent test does not need to include ECLSS, the elevator, or full propellant aggregation. The uncrewed vehicle will not weigh what the crewed vehicle will weigh.
What the OIG is describing is a sequence of decisions, each individually defensible, that collectively mean the first time astronauts land on the Moon in this vehicle will also be the first time several of its critical systems operate in the actual mission configuration.
The waiver path
A waiver is not a failure. NASA has issued them before. The question is what it means when the vehicle in question is 171 feet tall, landing on unimproved lunar terrain, with no backup egress if the elevator fails.
The OIG was careful not to conclude that the waiver should or should not be granted. Its job is oversight, not program management. But the report is notable for what it declines to smooth over: NASA and SpaceX disagree, the disagreement is moving in the wrong direction, and the CDR is a forcing function.
The supply chain dimension
This dispute sits inside a broader disruption: "The Prime Displacement" — the quiet restructuring of who builds America's space hardware, and how.
The Aerospace Industries Association and PwC released a joint report in March 2026 documenting the results: more than 3,400 U.S. space objects launched in 2025, roughly ten times the 2019 volume. Critical component shortages are delaying major programs. The supplier base is fragile, with essential components for many space systems supported by three or fewer qualified domestic suppliers.
The displacement is real. SpaceX holds $22 billion in cumulative federal contracts across NASA, the Space Force, NRO, and the Space Development Agency. Rocket Lab crossed $1.3 billion in SDA awards, including an $816 million prime contract for 18 Tracking Layer satellites — its largest single award. The Pentagon under Secretary of Defense Pete Hegseth visited SpaceX's Starbase in January 2026 and announced a formal restructuring of acquisition culture, explicitly citing the iteration model of a company that characterized legacy primes as "risk-averse."
The new primes built their advantage on vertical integration — building more of the vehicle in-house, controlling more of the supply chain, moving faster. Whether that model produces safer vehicles than the old primes it displaced is a different question. The OIG report does not answer it. It notes, carefully, that the answer has consequences for astronauts on the lunar surface.
The clock
CDR for Starship HLS will happen in August 2026. The waiver question will get answered, one way or another, before that date or as part of it. The OIG has done its job: it put the question on the record. What happens next is a NASA and SpaceX conversation that the public is not party to.
The vehicle that will carry the next astronauts to the lunar surface has a documented top risk of tipping over and a documented dispute over whether it meets a safety requirement. Those are facts. The rest is a decision nobody has made yet — or, if they have, has not shared.
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Sources: NASA Office of Inspector General Report IG-26-004 (March 10, 2026); SpacePolicyOnline.com; AIA-PwC "Strengthening America's Space Supply Chain" (March 2026); Department of Defense acquisition policy (January 2026); Rocket Lab contract disclosures (December 2025); Fed-Spend SpaceX federal contract analysis; Talk of Titusville (April 13, 2026).
