Neither of the two aircarft that ditched this year ditched because of the geabox mechanical fault. They ditched because the EMLUB warning system failed, otherwise they would have proceeded with their 30 mins clearance and made landfall.
FED
Since I am not all that familiar with this aircraft, I ask for understanding:
Am I correct in understanding that the emergency lubrication didn't begin to provide lube (i.e. provide lube to the gearbox when the normal lube failed due to the shaft no longer driving the pumps)
or
that the emergency system (as described by Colibri above) was actually providing the back up lube, but the warning sytem told the pilots a different story.
No, you aren't getting any more lube, emergency or otherwise
hence no choice but to ditch?
My understanding is that "no lube was happening from the emergency lube" but I may be confusing myself or not reading your remarks properly.