August 14, 2005 - The Crash of Helios 522 is one of the most mysterious ever investigated. Shortly after take off from Cyprus, the flight crew reports that two separate alarms are sounding in the cockpit. Then, the plane goes silent. The crew doesn’t respond to air traffic control as it gets closer and closer to Athens.
Two fighter jets from the Greek Air Force intercept the aircraft. Is it a hi-jacking? A terrorist plot to crash the plane into Athens? The fighter pilots see someone in the cockpit - but get no response to repeated radio calls. Then, after more than two hours in the air, Helios 522 runs out of fuel and crashes in the mountains. All 121 people on board are killed. Investigators are stumped, they don’t know what happened to the captain or the co-pilot. And they don’t know who was flying the plane.