That's a bit unfair Hughsey. That AS350 lifting accident was subject to the forces of a wire getting into the rotor - no surprise that the ship broke up. No helicopter would survive that.
As to the seat - maybe it's a poor design. Maybe if it didn't give the pilot's shoulders would have been torn out and his neck broken. The guy walked away. Can't complain about that.
To a certain extent it's a good thing when parts of the helicopter give. That's all energy not being directed into the pilot.
Anyway, AB139 tails fall off all the time and that's just taxying.
:-D