Postponing launch to replace fairing pneumatic valve. It is dual redundant, but not worth taking a chance.
Launch day probability of violating launch weather constraints: 10% Primary concern(s): Cumulus Cloud Rule Delay day probability of violating launch weather constraints: 20% Primary concern(s): Cumulus Cloud Rule
I spy with my @SpaceX eye ...
SpaceX’s Falcon 9 rocket has been raised vertical at pad 39A in Florida for liftoff today at 2:10pm EDT (1810 GMT).
Visited the flight proven #SpaceX Falcon 9 early this morning! 2-hour launch window for the BulgariaSat-1 mission opens at 2:10PM ET!
SpaceXVerified account @SpaceX 23m23 minutes agoFalcon 9 and BulgariaSat-1 vertical on Pad 39A. Today’s two-hour launch window opens at 2:10 p.m. EDT, 18:10 UTC.