Wirelessly posted (AT&T Tilt: HTC_TyTN_II Mozilla/4.0 (compatible; MSIE 6.0; Windows CE; IEMobile 7.11))
I think if the flight becomes airport controlled, you will not be able to standby online. My home airport seems to take control of all the day's flights in one shot, so I have never been able to standby online. It is fine once I get to the airport.