Sky News now reporting 10 fatalities, with search continuing for the other 6.
Helicopter: North Sea Oil Platform Aircraft Goes Down Off Scottish Coast | UK News | Sky News
Also from this link:
The Coastguard has confirmed the helicopter was a Super Puma AS 33L Mk II which was an earlier model of the one which ditched on February 18.
My thoughts and prayers go out to the families and friends of the deceased.