Another 'expert' who should know better...
Tony Cable
Tony Cable, a former senior investigator at the Air Accident Investigations Branch (AAIB), has watched footage and said: 'The takeoff looked normal but as it hovered above the stadium you can see pieces falling away. It looks like from the rear rotor blades.'It is consistent with a tail rotor breaking off. There are lots of pieces flying around. If you lose a large proportion of the blade you get a very large imbalance and pull the whole tail rotor off the aircraft'.