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Home Background 7 MILLION POUNDS OF THRUST, 77 MILLION HORSEPOWER, 17,500 MILES PER HOUR
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Launch Event Chronology

Launch Event

Time (min:sec)

Terminal Countdown
-9:00.0
Go for Auto Sequence Start
-0:31.0
Main Engine Start
-0:06.6
Arm Solid Rocket Boosters
-0:03.0
Solid Rocket Booster Ignition
0:00.0
Liftoff
0:00.3
Max-Q Throttle Down
0:26.0
Throttle Up to 104.5%
1:00.0
Solid Rocket Booster Separation
1:58.0 - 2:06.0
3-g Throttle Down
7:40.0
Main Engine Cutoff (MECO)
8:40.0
External Tank Separation
8:58.0
Last Updated: July 20, 2006
Responsible NASA Official: Yolanda B. Harris
Curator: Shuttle Curator

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