The 11 air accidents mentioned here are 90% light singles:- More US Night HEMS Accidents - Aerossurance
Never Fretter - when it comes to singles the numbers will always likely reflect what we are seeing, particularly for IIMC. Regardless of the training (which is obviously still very important and deserving of sim work) it will still come down to the age old note of currency versus proficiency, Single drivers generally just don't have the experience and/or regular practice. What I note is that the most comfortable single drivers on the line, are those that are either highly experienced on instruments from a prior position, or are flying IFR regularly in some other part time role eg. reserve duty or fixed wing. In those cases some would be happy with a wet compass and an ADF
