Originally Posted by
davidsfo
In my experience, unitedcargo will always says the reason for the delay is "operations" whether it is mechanical or weather. The main ual.com site will often specifically say that the delay was due to weather or "aircraft servicing."
I am NOT disputing that this is the only reasons you have seen.
But IME, I have seen (on unitedcargo):
Operations
Conditions at airport
Conditions at Destination
ATC