The launch vehicle stages are on their own power.
Atlas V and Centaur on Internal Power
Propellant Tanks at Flight Pressure
Controllers report propellant tanks on the Atlas V are at flight pressure. Everything is go.
T-4 Minutes and Counting
The GOES-R countdown is ticking toward a liftoff at 6:42 p.m. A computerized autosequencer will take over the countdown in order to conduct a host of activities in precise order.
‘Go for Launch’
The launch teams have been their final “go” for launch of the GOES-R spacecraft. Launch time is 6:42 p.m. EST. There are 27 engineers and controllers involved in the final polls.
SRB Ignition Enabled
The launch team is placing the controls in launch position. The solid-fueled boosters have been enabled for liftoff. This Atlas V will use four SRBs to help lift GOES-R into space.
New Launch Time: 6:42 P.M. EST
GOES-R is to launch tonight at 6:42 p.m. The launch teams will conduct polls to confirm readiness to launch. The final poll will take place in about 10 minutes.
GOES-R Spacecraft on Internal Power
The GOES-R team has been given a ‘go’ to place the spacecraft on internal power. The launch teams are working toward launching at 6:42 p.m., the end of tonight’s launch window. The Air Force Eastern Range continues to work an issue.
Range Issue in Work
The Eastern Range that oversees launches from Florida is working an issue. Tonight’s launch window extends until 6:42 p.m. EST.
Launch No Earlier Than 6:12 P.M.
The launch team continues to work through a launch vehicle issue. The current launch time is no earlier than 6:12 p.m. EST. The window is open until 6:42 p.m. EST.
Liftoff Delayed – Countdown in Hold
With the countdown in a planned hold, the launch teams are working a launch vehicle issue that will prevent the launch from taking pace at the opening of today’s window. The team has not set a new launch time yet but is working in 5-minute increments. Today’s launch window extends until 6:42 p.m. EST.