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Boeing’s Starliner Return to Space Slips to Early 2026

Upgrades to thruster cooling systems with improved seal designs are underway ahead of an uncrewed test mission.

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Boeing’s Starliner capsule for NASA has faced ongoing technical issues
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Overview

  • NASA and Boeing confirmed Starliner’s next flight won’t occur before early 2026 and will likely carry no crew as propulsion fixes are validated.
  • Engineers at Boeing and Aerojet Rocketdyne are testing new insulation shunts and seal assemblies at NASA’s White Sands facility to prevent thruster overheating and helium leaks.
  • Following five thruster failures and five helium leaks on its June 2024 crewed test, Starliner crews have been returned by SpaceX’s Dragon capsule for the Crew-10 and Crew-11 missions.
  • The Starliner program has exceeded its original budget by over $2 billion and remains grounded at Kennedy Space Center while remediation efforts continue.
  • With the ISS scheduled to retire in 2030, NASA faces a shrinking window to certify Starliner as a backup crew transport under its Commercial Crew Program.