Ja laukasuun siis jälellä vielä vähintään 22min + 9min.
Holdit menee siis aikavälein: T-27 hours, T-19 hours, T-11 hours, T-6 hours, T-3 hours, T-20 minutes, and T-9 minutes.
Mitä 22 minuutin kuluttua tapahtuu?
* Start automatic ground launch sequencer
* Retract orbiter access arm (T-7 minutes, 30 seconds)
* Start auxiliary power units (T-5 minutes, 0 seconds)
* Arm solid rocket booster range safety safe and arm devices (T-5 minutes, 0 seconds)
* Start orbiter aerosurface profile test, followed by main engine gimbal profile test (T-3 minutes, 55 seconds)
* Retract gaseous oxygen vent arm, or "beanie cap" (T-2 minutes, 55 seconds)
* Crew members close and lock their visors (T-2 minutes, 0 seconds)
* Orbiter transfers from ground to internal power (T-50 seconds)
* Ground launch sequencer is go for auto sequence start (T-31 seconds)
* Activate launch pad sound suppression system (T-16 seconds)
* Activate main engine hydrogen burnoff system (T-10 seconds)
* Main engine start (T-6.6 seconds)
http://www.nasa.gov/mission_pages/shuttle/launch/countdown101.html
