The RFM S92 (so therefore Cougar checklist??) states LAND IMMEDIATELY for the scenario the pilots faced.
Unlike the EC225 RFM, which says fly for 30 minutes at Vy, then LAND IMMEDIATELY.
Guess which one has 30 minutes run dry. There is no cover up by SAC as I do not think they have ever stated "30 minutes run dry capability", of course pilot perception is a different matter.
I'm not trying to defend SAC or the S92 gearbox, just trying to keep the debate on track