A stop after the automated sequencer takes over

Astronaut · Who you talk to: The launch director

With 20 seconds left, after the hand-over to the automated launch sequencer, the count stops.

What this case adds

Know that this ends the launch attempt for the day.
Safe the vehicle and plan the next attempt.

Critical fails

Answering "Go" with an open problem in your system.
Waiving a mandatory launch constraint after the terminal count has started: it cannot be waived.
Holding more than 3 minutes between T-6 and T-1:30 and pressing on instead of recycling to T-10.
Not knowing the abort or emergency procedure for your role.

The full checklist of this mold, step by step with its official sources: Launch: go / no-go poll and final count.

Sources

NASA, Artemis II Moon mission launch countdown https://www.nasa.gov/general/nasa-releases-artemis-ii-moon-mission-launch-countdown/

Making Synapses is not affiliated with, sponsored by or endorsed by NASA, the FAA or any space company. Artemis and the agencies are named and linked only to describe what this mold practices; real countdowns vary by mission.

Launch: go / no-go poll and final count