Earlier on Tuesday, an emergency involving a Corendon Airlines Boeing 737-800 caused Nuremberg Airport (NUE) in Germany to stop its operations. The narrowbody twinjet was flying to Bavaria from Ioannis Kapodistrias International Airport (CFU) on the Greek island of Corfu when its crew changed its squawk code to ‘7500,’ which indicates a hijacking or other unlawful interference to air traffic control.