Two of Boeing's new 737 Max jets have crashed in the last six months with over 300 people losing their lives. Early investigations into the first of the crashes - the Lion Air plane that crashed off the coast of Indonesia - have drawn attention to a new anti-stall system on the planes.

It suggests that the anti-stall system, which helps the plane right itself, took over from the pilots and forced the plane downwards in response to incorrect flight data. The suggestion is that it was a battle between man and machine.

As Boeing pulls its entire fleet of 737 Max planes, all eyes will be on the automation feature as a key safety concern.

Watch the video to see how the new anti-stall system could have been responsible for the crashes.