December 5th – launch day-1 events planned for STS-122

Resume countdown (3 a.m.)

Final preparations of the shuttle’s three main engines for main propellant tanking (3 a.m.)
Begin filling pad sound suppression system water tank (8 a.m.)
Close out the tail service masts on the mobile launcher platform
Begin star tracker functional checks (10:50 a.m.)
Pad sound suppression system water tank filling complete (11 a.m.)

Enter planned hold at T-11 hours for 13 hours, 6 minutes (11 a.m.)

Activate the orbiter’s inertial measurement units
Activate the orbiter’s communications systems
Install film in numerous cameras on the launch pad (11:55 a.m.)
Flight crew equipment late stow (4 p.m.)
Move rotating service structure to the park position (8 p.m.)
Perform ascent switch list
Fuel cell flow-through purge complete

Information source: NASA web site


Image credit: NASA

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~ by tellinghistory on December 5, 2007.

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