Some people think that the cause was pilot error, aircraft or airline engineer itself. But more than that, the cause of the crash of the most important and difficult to be detected is the passengers themselves.
Some investigation that the cause of the crash is something trivial like forgetting to turn off cellphones, laptops, PDAs and others. Essentially all electronic devices. why this happens?
It's simple ... when the electronic devices will emit light waves that interfere with a plane wave so that the jamming signal interruption occurred that caused the accident. You get on a plane? Do not forget to turn off the electronic devices before take off.