This is all in Italian so it's double Dutch to me, but the video is almost self explanatory. Apparently it was an empty bucket and was caught in an updraft, EOL to a very tight spot
Elicottero antincendio «precipita» per mille metri
Emergency landing this morning in the mountains of Pertica Bassa . It was about 9:30 and a helicopter was engaged in extinguishing a fire in town Frondine , on the slopes of the Corna Blacca , at 1,500 meters altitude .
He had just dropped what would have been the penultimate load of water when a gust of wind lifted the basket whose steel wires are tangled around the tail rotor .
The experience and the cold blood of 56-year old driver of a firm astigiana committed on behalf of the Lombardy Region in the fire is out , did the rest .
The man turned off the engine and started the procedure of " autorotation " falling for several hundred yards before giving " load " to the blades and head towards a handkerchief erborso and land unharmed .
The resort Frondine the small field to a hundred meters from the hamlet of perticarola Forno d' Ono , where the helicopter was able to land in one piece, there are a thousand meters, routes all with the engine off .