Spaceflight Insider

Launch of Delta IV with AFSPC-4 payload scrubbed due to ground support issues

The launch of a ULA Delta IV Medium rocket has been postponed by 24 hours due to ground support issues. Photo Credit: Jason Rhian / SpaceFlight Insider

CAPE CANAVERAL, Fla — The launch of a United Launch Alliance (ULA ) Delta IV Medium+ 4,2 carrying the AFSPC-4 mission was scrubbed today due to problems with the ground support equipment environmental control system that are used to support the launch vehicle prior to liftoff.

Launch is now scheduled to take place on Thursday, July 24. This is dependent on the root cause of the issues are discovered and corrected in time. If so, launch will take place at 6: 59 p.m. EDT (2259 GMT). At present, the only other issue which could impact the launch is the weather. Currently, weather conditions have only been given a 30 percent chance favorable conditions.

The AFSPC-4 mission is comprised of two Geosynchronous Space Situational Awareness Program (GSSAP) satellites which will be delivered to near-geosynchronous orbit as well as the Automated Navigation and Guidance Experiment for Local Space (ANGELS) satellite.

This article was edited at 7:30 p.m. EDT – the word “not” was corrected to “now.”

Stay tuned to SpaceFlight Insider’s Mission Monitor for live updates on the AFSPC-4 mission from Cape Canaveral!


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Jason Rhian spent several years honing his skills with internships at NASA, the National Space Society and other organizations. He has provided content for outlets such as: Aviation Week & Space Technology,, The Mars Society and Universe Today.

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