A sad story. I expect the pilot is going to get gigged for this one. IIRC, the STC for the jump door on a 182 requires that all passengers wear parachutes whenever the door is going to be opened in flight. Regardless, it's absolutely, insanely stupid that this DZ would allow observers without rigs. That was a tragedy waiting to happen. At least it happened to someone who wanted to die instead of some innocent person who was forced to ride it in because they couldn't bail out after a student jumper deployed on the step and took the tail off the airplane.