Spinning up a Serbia leg and our ops sheet lists “LYBE,” while tickets of course show the passenger-facing code. I need one authoritative reference to paste into our trip doc that confirms LYBE = Belgrade Nikola Tesla Airport, keeps the code story straight for trackers vs. tickets, and gives a compact arrivals snapshot for first-timers (transfer expectations, meet-point sanity). Ideal if it’s mobile-friendly for gate-side checks.