I was a member of the Board that investigated Neddy's accident and it was as Victor Pilot says. We thought that the top latch of his bang seat fractured under the severe strain of negative 'g' as the aircraft bunted after the tailplane came off. Neddy did wonder if he might just have got one finger on the bottom handle as he had a bruised finger but he was pretty bruised all over. As a result of that accident the bottom handle on the pilots seats was changed from a solid handle to a flexible loop.