RS-25 Engine Test

NASA is conducting a hot fire of an RS-25 engine as part of certification testing for future SLS (Space Launch System) rockets. The test of developmental RS-25 engine No. 10001 is planned to run for almost eight-and-a-half minutes (500 seconds) and throttle up to 111% of its rated power level.

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   Scrubbed for the day.

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   ScheduleNow expected October 2026

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   New test time.

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   Slip +2h 20mNow scheduled for Wed 14 Oct, 23:20 UTC

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   New test time.

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   Slip +2hNow scheduled for Wed 14 Oct, 21:00 UTC

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   NewAdded to events

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   Added event.