Let's muddy the waters yet again....
The given probability is based upon per flight hour is it not?
Thus if you assume five minutes of exposure for landing and takeoff....for a total of ten minutes per HEMS flight....would that not kick the probability back by a factor of six?
Then if one considers the actual number of operations and begin to calculate the exposure in that way....I would think the stats are altered by more than a lot.
I am a devout believer in strong twins for HEMS work so I am not banging a drum for singles but I am on the side of using accurate application of statistics in making decisions.
Did you guys not just have a record setting over-water rescue where a single engined aircraft went right alongside a Twin? What does that say about the view on safety while arguing about this pad in Wellington.
It would have been permissible to fly the victim (a hand injury...non-life threatening) over all that cold seawater but not land him at the hospital in question.
The lawyer just might be able to present a valid argument.