In the US, there are two ways to airfile an IFR flight plan:
- Call Flight Service on the radio via the nearest FSS RCO and ask them to file the plan
- Ask the ATC entity you're talking to for a "pop up" IFR clearance
Is there any equivalent to either function in European (SES) airspace? Or is Europe a continent where airfiling IFR flight plans is not possible? (Bonus points if there's some sort of ICAO standard way of handling airfiling.)