Hello, everybody. I’m a student of the National Aviation University in Kiev. I’m working on a degree work about potentially-conflict situations solving in air traffic control. My aim is to characterize different methods of potentially-conflict situations prediction and solving but what is even more important I want to study a problem of air traffic controller’s choice of the best solution among several and in what degree this solution (choice) is preferable for a pilot. I understand that the choice depends on a situation, but we are all different and in the same situation one will decide to change plane’s height and another one will change its speed. I will appreciate a lot, if You help me, namely: “I am an ATCO – and in potentially-conflict situations solving I prefer …” or “I am a pilot – and I would prefer …” Thanks a lot!