Ask the Bristow folks about MGB problems with the Super Puma's.....and how they had to reduce the power settings they were using that seemed to cause the gearboxes to require changing way too frequently. Perhaps it was the same situation with Cougar.
What's the big deal about an APU failure?
Gear boxes make chips.....all of them do....nothing new about that.
Sounds like some folks are looking for things to be worried about.