A Look at Today’s Key Milestones for NASA’s SpaceX Crew-2 Mission

The Crew-2 mission patch.Below are some key milestones for today’s Crew-2 mission. Launch is targeted for 5:49 a.m. EDT.

  • 1:29 a.m. Crew weather brief
  • 1:39 a.m. Crew handoff
  • 1:49 a.m. Suit donning and checkouts
  • 2:29 a.m. Crew walkout from Neil Armstrong Operations & Checkout Building
  • 2:34 a.m. Crew transportation to Launch Complex 39A
  • 2:54 a.m. Crew arrives at pad
  • 3:14 a.m. Crew ingress
  • 3:29 a.m. Communication check
  • 3:34 a.m. Verify ready for seat rotation
  • 3:52 a.m. Suit leak checks
  • 3:54 a.m. Hatch close
  • 5:04 a.m. SpaceX Launch Director verifies go for propellant load
  • 5:07 a.m. Crew access arm retracts
  • 5:11 a.m. Dragon spacecraft launch escape system is armed
  • 5:14 a.m. RP-1 (rocket grade kerosene) loading begins; first stage liquid oxygen loading begins
  • 5:33 a.m. Second stage liquid oxygen loading begins
  • 5:42 a.m. Falcon 9 begins engine chill prior to launch
  • 5:44 a.m. Dragon transitions to internal power
  • 5:48 a.m. Command flight computer to begin final prelaunch checks;
    propellant tank pressurization to flight pressure begins
  • 5:48:17 a.m. SpaceX Launch Director verifies go for launch
  • 5:48:59 a.m. Engine controller commands engine ignition sequence to start
  • 5:49:02 a.m. Liftoff!
  • 5:50 a.m. Max Q (moment of peak mechanical stress on the rocket)
  • 5:51:38 a.m. First stage main engine cutoff (MECO)
  • 5:51:41 a.m. First and second stages separate
  • 5:51:49 a.m. Second stage engine starts
  • 5:56 a.m. First stage entry burn
  • 5:57:49 a.m. Second stage engine cutoff (SECO-1)
  • 5:58:05 a.m. First stage entry burn
  • 5:58:32 a.m. First stage landing
  • 6:01 a.m. Crew Dragon separates from second stage
  • 6:02 a.m. Dragon nosecone open sequence begins

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