The aircraft made two close approaches, (with the pilot)...

The aircraft made two close approaches, (with the pilot) making gestures, ... And then, on the third one, his closure rate was too high, and he impacted the number-one propeller, which caused a violent shaking in the aircraft. And then, his nose impacted our nose, and our nose cone flew off, and the airplane immediately snap-rolled to about 130 degrees in low bank and became uncontrollable.