ShyTorque, I am intrigued and possibly ignorant. Which law of the land is this? It is my understanding that whether or not a Board of Inquiry finds aircrew negligent, is down to the guidelines set by the RAF hierarchy, nothing to do with law. Those guidelines have changed over the years and at the time of the accident, I believe that unless there was no doubt at all, you could not be found negligent after an accident. Feel free to fill me in (figuratively speaking!) if you know better.