Originally Posted by
Eutychus
Interesting! Do you have a source for that?
That would be the relevant airline’s own security department. Not all airlines do headcounts as part of SOP. I have worked for both kinds and managed to transport passengers who shouldn’t be onboard on both. Getting through the gate is one thing (timing and luck). Getting through security, border police and loitering airside for 16 hrs is another. The person in question should’ve drawn some attention as he tried to board several other flights beforehand (and was rejected).