Cygnus NG-14 (CRS-14) - Antares-230+ - Wallops FF, MARS LP-0A - 03.10.2020 01:16:14 UTC

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10/03/2020 02:04 Stephen Clark

The Antares launch team is now calibrating engine pressure sensors on the Antares rocket.

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10/03/2020 02:27 Stephen Clark

The countdown has entered a pre-planned 30-minute built-in hold. An updated status on the countdown from Northrop Grumman launch conductor Adam Lewis shows the Antares rocket, the Cygnus spacecraft and the Wallops range are all "green" at this time for liftoff at 9:16 p.m. EDT (0116 GMT).

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10/03/2020 02:39 Stephen Clark

The launch weather officer at Wallops just briefed the Antares team on conditions for launch. Weather continues to look favorable for tonight's liftoff time set for 9:16:14 p.m. EST (0116:14 GMT).

The weather officer predicts a 90 percent chance of acceptable weather at launch time tonight. The forecast at launch time calls for a few clouds at 4,000 feet, northwest winds at 4 knots, and a temperature of 56 to 58 degrees Fahrenheit.

Upper level winds are also predicted to be favorable for launch.

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10/03/2020 02:55 Stephen Clark

Northrop Grumman launch conductor Adam Lewis has polled the Antares launch team, and all stations reported they are "go" to begin fueling the liquid-fueled first stage with RP-1 kerosene and liquid oxygen.

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10/03/2020 02:56 Stephen Clark

The countdown has resumed after a 30-minute built-in hold.

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10/03/2020 03:01 Stephen Clark

Low-flow loading of RP-1 kerosene into the Antares rocket's first stage is underway, and chilldown conditioning of the liquid oxygen system has started.

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10/03/2020 03:01 Stephen Clark

Gripper arms on the transporter-erector-launcher have opened, and the structure has moved to the so-called "pre-pullback" position in preparation for its retract at liftoff.

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10/03/2020 03:20 Stephen Clark

Low-flow loading of liquid oxygen into the first stage has begun, the launch team confirms.

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10/03/2020 03:32 Stephen Clark

The Antares' Gryo Compass guidance system is being aligned and configured for today's launch.

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10/03/2020 03:33 Stephen Clark

Engineers have selected and loaded the preferred trajectory file into the Antares flight computer at this time. This trajectory file takes into account today's upper level wind conditions.

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10/03/2020 03:38 Stephen Clark

The Wallops range is "green" for toxic and debris rules. These rules ensure debris and toxic vapors from the launcher do not spread over populated areas in the event of an accident.

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10/03/2020 03:50 Stephen Clark

The Antares launch team continues stepping through countdown procedures toward liftoff at 9:16:14 p.m. EDT (0116:14 GMT). Engineers are currently powering up the rocket's flight termination system

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10/03/2020 03:54 Stephen Clark

The Antares rocket's Transporter-Erector-Launcher, or TEL, is being armed for rapid retract at this time.

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10/03/2020 03:55 Stephen Clark

Upper level winds are reported go for launch.

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10/03/2020 03:59 Stephen Clark

The Cygnus spacecraft is switching to launch mode. Cygnus will deliver nearly 8,000 pounds of cargo to the space station, including prosciutto, chorizo, salami, summer sausage, brie, smoked gouda, smoked provolone, and fruits and vegetables.

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 Northrop Grumman @northropgrumman 19 с

Final readiness poll is complete and we are go for launch. Liftoff is set for 9:16 p.m. EDT. Go #Antares! Go #Cygnus!

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10/03/2020 04:08 Stephen Clark

T-minus 8 minutes and counting. The countdown remains on track, targeting liftoff from pad 0A at the Mid-Atlantic Regional Spaceport at NASA's Wallops Flight Facility in Virginia at 9:16:14 p.m. EDT (0116:14 GMT).
The range is confirmed "go" for launch.