Originally Posted by
SASless
Could it be the 225 MGB Design failed to correctly assess Loading on those particular Gears/Bearings?
I have been wondering about this also. The lineage of the AS332L2/EC225 saw it go from 4 blade MR / 5 blade TR in the 332 to a 5 blade MR and 4 blade TR in the 225, this went along with substantial increases in the gross weight and MTOW.
It would be interesting to see what, if any, changes were made to the MGB along the way. Do the 332L2 and 225 have the same part number and mod status MGB, do they have the same part number planetary gears and bearing rollers?
I have heard that at some point along the way going from the SA330 to the 332L to the 332L1/L2 the MGB went from having 9 planetary gears in the primary and secondary reduction stages to having 8 planetary gears. I'm not sure if this is correct or when the change occurred but your comment about assessing the loads especially when increasing max weights is a valid one.