German Federal Police helicopter crew twice refueled the wrong fuel

[Bravo73]

Originally Posted by nigelh

I am told that heating oil and JetA1 are often the same thing and come out of the same tanker .

That is definitely NOT true. I once discussed with our boiler engineer about adding some excess Jet A1 to our domestic heating oil tank. He strongly advised against it to the point of refusing to service the boiler if I did.