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Falcon 9 - Generic Countdown Timeline

Time	Event
L-13:30:00	Dragon Power Up
L-7:30:00	Launch Vehicle Power Up
L-3:50:00	Liquid Oxygen Loading
L-3:40:00	Rocket Propellant 1 Loading
L-3:00:00	Taking complete
	LOX Replenish
L-1:40:00	Strongback Umbilical Tower Retraction
L-1:00:00	Weather Briefing
L-0:13:00	COUNTDOWN HOLD POINT
L-0:13:00	Launch Director Poll
T-0:10:00	Terminal Countdown
T-0:09:45	Launch Enable to Flight Mode
T-0:09:43	First Stage Merlin Engine Chilldown, Pre Valves to Open
T-0:09:40	Verify that Terminal Countdown has started
T-0:09:30	Merlin 1C: Lox Bleeder Valves Open
T-0:07:00	Dragon to Internal Power
T-0:06:25	First Stage Fuel Bleed to Open
T-0:06:17	Align Flight Computers to Self Alignment
T-0:05:30	Dragon Configuration for Solar Array Power Generation
	Dragon Countdown Auto Sequence
T-0:05:15	Stage 2 Thrust Vector Control Bleed
T-0:05:00	Second Stage Nitrogen Loading Termination
T-0:04:46	Stage 1 & Stage 2 Auto Sequence starts
T-0:04:30	Transfer to Internal Power
T-0:04:10	Vehicle Release Auto Sequence
T-0:03:40	TEA-TEB Ignition System Activation
T-0:03:25	Flight Termination System to Internal Power
T-0:03:11	Flight Termination System Armed
T-0:03:02	LOX Topping Termination
T-0:03:00	Second Stage Thrust Vector Actuator Test
T-0:02:45	Fuel Trim Valve to Flight Position
T-0:02:30	Status Check
T-0:02:20	Stage 2 Heater Deactivation
T-0:02:00	Range Verification
T-0:01:35	Helium Loading Termination
T-0:01:30	Final Engine Chilldown, Pre-Valves/Bleeders Open
T-0:01:20	Engine Purge
T-0:01:00	Flight Computer to start-up
	Pad Deck Water Deluge System Activation
T-0:00:50	First Stage Thrust Vector Actuator Test
T-0:00:40	Propellant Tank Pressurization
T-0:00:20	All Tanks at Flight Pressure
T-0:00:15	Arm Pyrotechnics
T-0:00:03	Merlin Engine Ignition
T-0:00:00	LIFTOFF

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