JimL
Germany is unfortunately still operating under the first version of JAR-OPS 3.
I've not affirmed the flight was outside the regulations and approvals.
In germany an operator needs an approval to do interhospital-flights independent from JAR-OPS, because it's a public operation, paid by public health insurancies and regulated by a public headquarter. Nearly all federal countries in germany have on this way limited the job to twins. But i don't also affirm the accident was caused by the single engine.
All i wrote is, that one of the last single EMS helicopters chrashed tonight. I'm shure the pilot wasn't aiming to a night flight. May be only one of the not abnormal delays in the EMS business.