ghost flight | scienceinfo.net

A switch on a plane caused all passengers and pilots to fall into a coma, killing 121 people.
Two fighter jets were sent up to check what was happening to Helios Flight 522.
The origin of the 'ghost flight' disturbs London's sky
If you have the opportunity to land at London's Heathrow airport, you will be overwhelmed by the tremendous passenger numbers of one of the busiest airports in the world.