Chopper Ground Resonance?
 

A helicopter broke into pieces after touch down, due to some sort of "ground resonance".

Link here (in French):
Un hélicoptère se désintègre littéralement - Yahoo!

Anyone familiar with this phenomenon? Seems there was no defect prior to the event.

Ground resonance is a well known helicopter phenomena, and can catch the unwary. Discussion about this event and how to handle it in Rotorheads :ok:

Thanks a lot,

Never seen it before, although obviously it's a well documented occurence.

Flex