Well, some good lessons learned. I think it is fair to say that yesterday at Aberdeen was a pretty extreme day, and with a million rules to remember, it is hardly surprising that pilots are not in the habit of calculating Density Altitude.
Thank you P3 Bellows for confirming that someone from Bristow did try to contact the other operators. I accept that there is no standard procedure for this, but given what HC says regarding the seriousness of this issue, it is good to know that pilots from all companies do look out for each other - As I would expect.
Kudos to Bristow for spotting this issue and I guess that comes from having the greatest experience on the type - I seem to remember there was a similar issue when the 225 first arrived on the North Sea - I do find it amazing however that such issues can be fixed in the latest 'Service Pack 4' or whatever its called !! Thank goodness for steam driven aircraft !