My rotor blade came loose because the feathering shaft nuts opened in mid-flight! The problem was, that there was some oil at down where the nut goes, and it slowly made its way up along the screw threads, loosening it!
It was quite a sight! The blades just flew off, and the helicopter plummeted to the ground. I had to search quite long for the blade, and it was found in the most unusual place...
I never found mine...Both gone.
JMULIKOW 2 years ago