I have occasionally entered or exited a plane with the engine running. Also had instructors or passengers do it. I am always very careful to approach from the tail toward the door.
But this report is causing me to re-consider this.
Good point. Normally myself or another very experienced pilot is at the controls. Would require a very careful briefing, which was apparently not done in this case.
I wonder how clean the amputation is from this sort of thing and if reattachment surgery would be a possibility. Or if the blow of the blade just shatters the limb?
In any case, I hope for the best recovery possible.