Originally Posted by WHBM

OK, having embarrassed myself with getting the wrong continent last time (!), this could be more in my area.

Bratislava was the second city of Czechoslovakia at the time, but had little (probably none) service to the "west". So with four carriers there, I'll say the common factor was they all used Soviet equipment. CSA used to use everything from IL-62s to Yak-40s on the Prague shuttle (often nothing like the timetable showed), so it won't be a given type, just all Soviet aircraft.