SpaceX and NASA Delay ISS Mission Due to Dragon Spacecraft Oxidizer Leak
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NASA and SpaceX have delayed the Crew-13 mission to the International Space Station after detecting an oxidizer leak in the Dragon spacecraft’s propulsion system during standard prelaunch processing, NASA said Aug. 29. Joint NASA and SpaceX teams are conducting additional tests and reviewing data, with necessary rework to be completed before launch. NASA has not announced a new target date. Crew-13 is led by NASA astronauts Jessica Watkins and Luke Delaney, joined by Canadian astronaut Joshua Kutryk and Russian cosmonaut Sergey Teteryatnikov. The mission was scheduled to launch no earlier than Sept. 12 from Space Launch Complex 40 at Cape Canaveral Space Force Station in Florida. The delay followed SpaceX’s successful Aug. 30 launch of NASA’s Nancy Grace Roman Space Telescope aboard a Falcon Heavy from Kennedy Space Center. NASA has provided no evidence linking the Crew-13 propulsion issue to the Roman launch, which used different launch hardware entirely today.
Timeline
- May 1, 2026 — NASA assigned four astronauts for Crew-13’s September mission.
- August 3, 2026 — Crew-13 members introduced themselves during NASA training.
- August 28, 2026 — NASA confirmed Roman telescope readiness following final launch review.
- August 29, 2026 — NASA announced Crew-13’s launch-date adjustment after leak detection.
- August 30, 2026 — NASA continued reviewing Dragon propulsion data before scheduling launch.
- August 30, 2026 — Roman successfully launched aboard Falcon Heavy from Florida.
- August 30, 2026 — Crew-13 had no replacement launch date publicly announced.
- Future — NASA may announce a revised Crew-13 launch date after testing concludes successfully.
- Future — Additional Dragon rework could extend the schedule beyond September’s original target.
- Future — Successful testing would allow Crew-13 preparations and astronaut quarantine to resume.
Sources
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