I’m not sure, the ability to go back or forward in time on flight radar is limited and I couldn’t find much info about it. Chucked it in here as a might in-case others had some information regarding it 
@Jonnie2604 is correct, UA3904 isn’t bookable anywhere and from FlightRadar history, the route and schedule is sporadic and always changing so most likely a positioning flight. I don’t know how United numbers their flights so can’t be sure but quite confident this was a one-off
4 Likes
Yeah, I had a look into it, meant to update here, they did a switcheroo with one of their 772’s but neither were bookable flights. Pity.
Usually in the lower digits, so that is correct.
Found another one for Prague -
From: Chengdu (CTU)
Airline: Central Airlines
Type: B777 LF
Flight Numbers: Out - I99838 // Rtn - I99837
Issue: Airport, airline and aircraft exist in game, but not available at the specified airport for a contract.
images attached corroborate the detail above and show this is a frequent route. It’d be a good one to add given the limited real-world cargo ops at Prague.
Thanks again for tracking all this, hopefully it’ll make it easier for the mods!
2 Likes
Hi all. Just want to let you know that the main post above is being split into a dedicated post for each airport. This will make the discussion more focussed and have it be easier to keep track. Feel free to continue any discussion on those posts:
INN
BRI
PRG
IAD
NGO
MCTOnce all the replacement posts have been approved, I would kindly like to ask @ukplanespotter757 to either close or delete this post after a few days.
3 Likes