@maydayaircrash: The investigation into Helios Airways Flight 522 requires a simulation to see what might've happened, and there are finally some answers as to why the cockpit crew was unresponsive and why the flight ended in a tragic crash landing... Mayday: Air Disaster Season 4 Episode 10: https://www.youtube.com/watch?v=P52BESqVCd0 Watch Mayday: Air Disaster on YouTube #Mayday #AirDisasters #AirCrash #AirCrashInvestigation #fyp