None that i have heard of in Oz, BUT
flying any single engine helicopter over mountains at night is something you SHOULD be concerned about. At least tell me you will be using NVG?
Statistics can be bent anywhich way, but engine failures are not a rare occurence, and rarely are failure statistics recorded where the failure does not result in damage or injury. For the pro single engine mob that are bound to be wound up by this statement: when it all goes quiet at night, out to sea, IFR, over inhospitable terrain or day care centres, console your selves in the statistics of how safe single engines can be.
And how much money was saved by the operator to put you there. Who knows, maybe they put it all into accident insurance for the sake of your loved ones!
