Proton-M Countdown Timeline

Time Event
-11:30:00.0 Guidance System Activation and Checkout
-11:30:00.0 Briz-M Countdown Initiation
-08:00:00.0 State Commission Meeting
-08:00:00.0 Launch Pad Cleared for Fueling
-06:10:00.0 Launch Vehicle Activation
-06:10:00.0 Launcher Guidance System Activation
-06:10:00.0 Spacecraft Abort Unit Power-Up
-06:00:00.0 Launch Vehicle Propellant Loading
-05:00:00.0 Launch Vehicle Countdown commences
-02:30:00.0 Launch Pad Final Close-Outs
-02:30:00.0 Final Launch Vehicle Close-Outs
-02:00:00.0 Personnel to Launch Positions
-01:00:00.0 Service Structure Retraction
-00:45:00.0 Master Countdown Sequence Initialization
-00:45:00.0 Propulsion System Checkout
-00:45:00.0 Countdown Clock Synchronization
-00:35:00.0 Launch Abort System armed
-00:35:00.0 Spacecraft Launch Abort Unit Activation
-00:10:00.0 Spacecraft: GO/No GO Poll
-00:05:00.0 Automated Countdown Sequence
-00:05:00.0 Liftoff Time Determination
-00:05:00.0 Flight Computer Alignment
-00:05:00.0 Briz-M Transition to Internal Power
-00:02:00.0 Launch Vehicle Transition to Internal Power
-00:02:00.0 Briz-M Health Check
-00:02:00.0 Propellant Tank Pressurization
-00:00:03.1 Flight Computers: Final Systems Poll
-00:00:03.0 GO Signal: Ignition Sequence Start
-00:00:02.5 RD-253 Ignition
00:00:00.0 Liftoff
+00:00:00.9 First Stage at Full Thrust