Originally Posted by
ft101
Are you sure? Their website blurb indicates they also reference weather, ECs and tech. issues (although admittedly not ATC ones).
Until you show me a screenshot showing a recent* flight with a compensable delay which they advise as not being eligible for compensation, then yes, I am sure!
(*must be recent, i.e. they cannot have already been through the process of interacting with the airline in question and therefore having had it proved to them that extraordinary circumstances arose, or that they lost the case in court. In these circumstances, they are unlikely to wish to solicit further claims for the same flights, and would adapt the "checker" accordingly).