A Look at Today’s Key Milestones for NASA’s SpaceX Crew-1 Mission

The SpaceX Falcon 9 rocket and Crew Dragon spacecraft stand on the launch pad at Kennedy Space Center's Launch Complex 39A.
The SpaceX Falcon 9 rocket and Crew Dragon spacecraft stand on the launch pad at Kennedy Space Center’s Launch Complex 39A during final preparations for launch on NASA’s SpaceX Crew-1 mission. Liftoff is scheduled for 7:27 p.m. EST.

Below are some key milestones for today’s Crew-1 mission. Launch is targeted for 7:27 p.m. EST.

  • 3:12 p.m. Crew weather brief
  • 3:22 p.m. Crew handoff
  • 3:27 p.m. Suit donning and checkouts
  • 4:05 p.m. Crew walkout from Neil Armstrong Operations & Checkout Building
  • 4:12 p.m. Crew transportation to Launch Complex 39A
  • 4:32 p.m. Crew arrives at pad
  • 4:52 p.m. Crew ingress
  • 5:07 p.m. Communication check
  • 5:12 p.m. Verify ready for seat rotation
  • 5:13 p.m. Suit leak checks
  • 5:32 p.m. Hatch close
  • 6:42 p.m. SpaceX Launch Director verifies go for propellant load
  • 6:45 p.m. Crew access arm retracts
  • 6:49 p.m. Dragon spacecraft launch escape system is armed
  • 6:52 p.m. RP-1 (rocket grade kerosene) loading begins; first stage liquid oxygen loading begins
  • 7:11 p.m. Second stage liquid oxygen loading begins
  • 7:20 p.m. Falcon 9 begins engine chill prior to launch
  • 7:22 p.m. Dragon transitions to internal power
  • 7:26 p.m. Command flight computer to begin final prelaunch checks;
    propellant tank pressurization to flight pressure begins
  • 7:26 p.m. SpaceX Launch Director verifies go for launch
  • 7:27:12 p.m. Engine controller commands engine ignition sequence to start
  • 7:27:15 p.m. Liftoff!
  • 7:28 p.m. Max Q (moment of peak mechanical stress on the rocket)
  • 7:29:52 p.m. First stage main engine cutoff (MECO)
  • 7:29 p.m. First and second stages separate
  • 7:30 p.m. Second stage engine starts
  • 7:34 p.m. First stage entry burn
  • 7:36:05 p.m. Second stage engine cutoff (SECO-1)
  • 7:36:14 p.m. First stage entry burn
  • 7:36:44 p.m. First stage landing
  • 7:39 p.m. Crew Dragon separates from second stage
  • 7:40 p.m. Dragon nosecone open sequence begins

Leave a Reply