Launch of NASA’s Swift spacecraft aboard a Boeing Delta II rocket has been set for no earlier than Saturday Nov. 20. The one hour launch window opens at 12:10 p.m. EST.

Mission managers will meet again this afternoon to confirm the work necessary for a Saturday launch attempt is on schedule and no additional issues have arisen.

Overnight, workers determined the Range Command-Receiver Decoder equipment on the launch vehicle is the likely reason for the voltage variance seen earlier in the week. Workers will gain access to the equipment today and replace the necessary parts. The system will be retested on Friday.

Air Force weather forecasters are indicating only a 10 percent chance of launch weather constraint violations on Saturday.

For up-to-date status, media can call the KSC codephone at 321-867-2525.