The 18 December launch by a Falcon 9 rocket was scrubbed shortly before lift-off.
The first GPS III satellite destined to join the constellation was due to launch from Cape Canaveral during a window of 1411-1437 UTC on 18 December.
The end of the launch window was chosen to let upper winds reduce but, at around 7 minutes to lift-off, the launch was scrubbed due to a thermal constraint on the first-stage liquid oxygen system.
The launch has been re-scheduled for 1407 on 19 December.
**UPDATE** - THE LAUNCH WILL NOT TAKE PLACE ON 19 DECEMBER; A NEW DATE WILL BE ANNOUNCED ASAP . .
Email to a Friend