Does EASA (or other regional/national aviation safety authority) have a confidential "close-call" reporting system?
I don't know much about the ASRS, so but I think this is a similar program... It's obviously not Europe, but Australia has the REPCON scheme for confidentially reporting all sorts of safety matters. The ATSB do a bit of investigating, seeking a response from the airline/whatever organisation is involved, and then publish the responses to a couple in CASA's Flight Safety Australia magazine.