SpaceX F9 : Inmarsat-6 F2 (GX6B) : CCSFS SLC-40 : 17/18 Feb 2023 03:59 UTC

• #60 by Steven Pietrobon on 18 Feb, 2023 02:17
• SpaceX mission control audio.
  
  
• #61 by Steven Pietrobon on 18 Feb, 2023 02:21
• T-38 minutes. Mission control should be giving a go to start propellant loading about now.

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• #62 by Steven Pietrobon on 18 Feb, 2023 02:24
• Go for propellant load and launch. Giving abort instructions.
  
  Falcon 9 tanks are venting for the start of propellant loading.
  
  T-35 minutes. First and second stage RP-1 loading and first stage LOX loading should be starting about now.
  
  Launch autosequence has started.

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• #63 by Steven Pietrobon on 18 Feb, 2023 02:29
• T-30 minutes. Frost forming at base of first stage LOX tank.

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• #64 by Steven Pietrobon on 18 Feb, 2023 02:34
• T-25 minutes.

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• #65 by NEMo1103 on 18 Feb, 2023 02:39
• T-20 minute vent occurring now.
• #66 by Steven Pietrobon on 18 Feb, 2023 02:39
• Stage 1 pogo.
  
  T-20 minute vent.
  
  Stage 2 RP-1 load complete.

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• #67 by FutureSpaceTourist on 18 Feb, 2023 02:41
• https://twitter.com/nasaspaceflight/status/1626788421107687424
• #68 by Steven Pietrobon on 18 Feb, 2023 02:44
• Spacecraft is on internal power and is go for launch.
  
  T-16 minutes. Second stage LOX loading has started.

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• #69 by Steven Pietrobon on 18 Feb, 2023 02:45
• T-14 minutes. SpaceX webcast has started.

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• #70 by Steven Pietrobon on 18 Feb, 2023 02:47
• T-12 minutes. ASDS.

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• #71 by Steven Pietrobon on 18 Feb, 2023 02:49
• Fairings are used.
  
  T-10 minutes. Have begun helium loading.

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• #72 by Steven Pietrobon on 18 Feb, 2023 02:52
• T-7 minutes. Engine chill has started. Launch is carbon neutral.

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• #73 by Steven Pietrobon on 18 Feb, 2023 02:54
• T-6 minutes. First stage RP-1 load is complete.

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• #74 by Steven Pietrobon on 18 Feb, 2023 02:55
• T-5 minutes. Pressing tanks for strongback retract.

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• #75 by Steven Pietrobon on 18 Feb, 2023 02:56
• T-4 minutes. Strongback is retracting.

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• #76 by Steven Pietrobon on 18 Feb, 2023 02:57
• T-3 minutes. First stage LOX load is complete.

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• #77 by Steven Pietrobon on 18 Feb, 2023 02:58
• T-2 minutes. Second stage LOX load is complete.

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• #78 by Steven Pietrobon on 18 Feb, 2023 02:59
• T-1 minute. Falcon 9 is in startup.
  
  LD is go for launch.

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• #79 by LouScheffer on 18 Feb, 2023 02:59
• Quote from: Steven Pietrobon on 18 Feb, 2023 02:52

  T-7 minutes. Engine chill has started. Launch is carbon neutral.
  

  The Inmarsat portion of the launch preview was quite solid, in my opinion.  What they do, why you should care, thanks to all involved.