Originally Posted by
paco
"What is puzzling is that it looks like the rotors take only the top part of the MRGB with them when they separate rather than ripping the whole gearbox out."
I agree - Which leads me to wonder why it was weakened - previous overtorquing? I know it's one of the places I look at when I'm preflighting. It would have to be one hell of a pull, though.
It’s my understanding that the planetary reduction gear is located towards the top of the 206 main rotor gearbox. A sudden stoppage of this planetary gear assembly ( as in the Super Puma a few years back ) might potentially bust out of the gearbox casing and split it in two.