Usually when we read about the catastrophes, the official culprit exists, but it is far from the whole story. If you remember the Tenerife collision, there KLM captain took the blame. However, start with the bomb explosion at the Gran Canaria airport, the subsequent diversion of traffic, the horrible congestion of Los Rodeos airport at Tenerife, and the dense fog. Add poor communication with the ATC tower (stress + different native languages while communicating in English). Net result: 583 fatalities + 61 injured.