I'd never thought to google it until tonight, but William Halliwell (killed in the plane) was my great (great?) uncle. I can't say I know all that much about what happened, but it was often talked about in my family and my mother if she had turned out to be a boy was going to be named after him. We have a newspaper cutting about his death somewhere that I will dig out and I'll see if I can add anything to the above. I've visited his grave many times as it is near the family home. It became a bit of a tradition for me that I would my poppy after November 11th by his grave. Brian, I'm particularly interested to see your posts on here about the crash, I'll see if I can dig up anything interesting about Uncle Billy and I'll send it on to you.