What do you make of this?

[connor]

A chopper in Brazil disintergrates on landing! Just happened today.

[Timmo]

An out of balance rotor assembly or possibly some sort of hub/gearbox mounting failure? Once something is out of balance, it doesn't take long for it to shake apart due to the immense rotational forces involved.

[Splitpin]

Bloody hell, at least it wasnt in the air.

[connor]

QUOTE (Splitpin @ Feb 24 2012,3:18 PM) <{POST_SNAPBACK}>

Bloody hell, at least it wasnt in the air.

That's what I thought!

[Ian Warren]

Simple explanation , you do not put over sized sub woofers into cars helicopters trains or bus's , that is what is expected when you turn the volume up !

[Naki]

"Officials believe the helicopter experienced what is known as ground resonance, a condition that happens when the aircraft's rotor is working while the helicopter is on the ground."

[Charl]

The same "officials" are said to have noted the following, regarding the Cessna 172:
The single propeller has cooling as its primary function.
When it stops, pilots are invariably seen to break out in a sweat!