Okay HC, I was being very conservative and "ball park".
Make it about 2 dozen accidents in the NNS in 33 years, of which 8 involved fatalities and 75 return flights, or 150 singles each day, 5 days/week, 50 weeks/year.
Using these revised figures, there has been on average 1 accident involving fatalities in the NNS every 4.125 years.
This would mean that your typical offshore worker doing 3 weeks on, 3 weeks off, would go on 72 flights in 4.125 years and would have an approx 1:2150 chance of being involved in an accident with fatalities.
Unfortunately I couldn't find stats for Aberdeen and Scatsta annual helicopter departures and arrivals, so erred conservatively.
Last edited by Colibri49; 29th Sep 2013 at 21:10.