Something slightly off the main track, but I've been trying to find ways of analysing flight plan routings in Europe (other than having access to CFMU or whetever it's called these days). Airway overlay is available with subscription to Flightradar24.com but I found it a pain in the neck to try and use with replay. So I looked at taking .csv data for historic flights from FR24 (requires a subscription) and displaying that as a "route" overlay on Skyvector.com. That way I can pick a route, select