maxweig2
I used to work in TC's Aircraft Certification section.
TC does not blindly accept FAA certification. There were a number of 'concern' papers raised by TC on issues related to the S-92 certification. Unfortunately, it appears that there was none raised on the loss of lubrication.
In the past, TC has been pretty good on this - the Boeing 757 thrust reverser design was changed to suit TC requirements long before the Lauda air crash (when the thrust reverser deployed in flight).
You'd have to ask TC why there wasn't such a concern paper raised on the S-92. Good luck getting any kind of sensible answer.