Overview
- A renewed air leak in the Zvezda module’s PrK transfer tunnel prompted NASA to order five crew members into the docked SpaceX Crew Dragon as a precaution on Friday.
- Roskosmos reported finding two possible leak sites, said it sealed one immediately and prepared to seal the second before pausing work to collect more data.
- After repairs were paused and teams reviewed measurements, NASA cleared the sheltered crew to return to normal station operations the same day.
- The PrK tunnel leak is a long‑running problem first detected in 2019 that has resisted permanent repair and has produced repeated temporary fixes.
- The incident highlights operational cooperation between NASA and Roskosmos and raises questions about how to repair aging ISS hardware and when to resume or change repair methods.