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Soyuz FG Generic Countdown Timeline

Time	Event
L-34:00:00	Tanking Preparations
L-08:00:00	Final Countdown commences
	Soyuz Systems Checks
L-06:00:00	Battery Installation in Booster
L-05:30:00	Sate Commission Meeting
L-05:15:00	Crew Arrives at Site 254
L-05:00:00	Propellant Loading
L-04:20:00	Crew dons Sokol Suits
L-04:00:00	Liquid Oxygen loading complete
L-03:40:00	Crew reports to Delegations
L-03:00:00	Tank Cars depart
L-02:40:00	Crew arrives at Launch Site
L-02:30:00	Crew Ingress
L-02:00:00	Hatch Closure
L-01:45:00	Sokol Air Flow Initiation
	Soyuz Spacecraft pressurization
	Soyuz Systems Checks
	Launcher Systems Checks
L-01:30:00	Internal Soyuz Hatch Pressure Checks
	Communication System Activation
L-01:00:00	Guidance System Acitvation
	Launch Pad Evacuation
L-00:45:00	Flight Computer Software Load
	Service Tower Retraction (Service Structure Halves)
L-00:40:00	Sokol Pressure Verification
L-00:30:00	Launch Command Power Activation
	SAS Launch Abort System Activation
L-00:25:00	Removal of Service Towers
L-00:15:00	Sokol Checks complete
	Launch Pad clear
	Escape System in Auto Mode
L-00:10:00	Inertial Guidance System Activation
	On-Board Recorders activated
L-00:06:00	COUNTDOWN AUTO SEQUENCE
L-00:05:00	Ground & On-Board Telemetry Activation
	Transfer to onboard Control
	Commander Controls activated
	Visors Closed and Air Flow Initiation
	Launch Key Inserted in Launch Bunker
L-00:03:15	Engine Nitrogen Purge
L-00:02:40	Umbilical mast power disconnected to 3rd stage
L-00:02:35	Propellant Tank Pressurization
L-00:02:30	Onboard Measurement System Activation
L-00:02:15	Propellant Tank Drain&Safety Valves closed
	LOX and N2 Loading Termination
L-00:01:00	Transfer to Internal Power
	AUTO SEQUENCER ENABLED
	First Umbilical Tower Separates from Booster
L-00:00:40	Power Umbilical to third Stage disconnected
L-00:00:20	ENGINE IGNITION (Core Stage and Boosters)
L-00:00:15	Intermediate Thrust Level
	Second umbilical Tower separated from Booster
L-00:00:10	Engine Turbopumps at Flight Speed
L-00:00:05	Full Thrust Level
L-00:00:00	Fueling Tower Retracts
	LIFTOFF

   

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