I live in England, and use flightaware to see when a plane is flying over my house. I often see a lot of cargo traffic from the US going to various European destinations (cargolux, ups, fed-ex, etc.).
However, I have noticed that one cargo airline, Aerologic, does not appear on flightaware!
I have just seen BOX411 (routing LAX-FRA) flying over my house at FL350, but I type in the flight number and flightaware is unable to find it.
What is the reason for this?