In the mid eighties a Bell47 (Bristows?) had a mid air with a Hughes 500 over Kent. The main blades contacted each other resulting in the 47 having a crumpled blade which allowed an emergency landing to be made.
The 500 lost about a foot off one blade which of course resulted in the loss of the tip weights.
In the emergency decent all the radios shook out of their racks by the vibration and fell out through the canopies which had shattered. The instrument console and the aft structure then proceeded to act as dampers to the massive vibration. This resulted in the console shearing off at the floor and the longerons in the aft fuse shearing.
The pilot then managed to get the aircraft onto the ground unfortunately in a hop field with all the attendant cables.
The aircraft sustained more damage but everyone walked away.
Raise a glass to the Hughes 500 and to lady luck.