I remember Fred's dissappearance as I was a newly licenced fledging and it was quite topical and with the NZ airliner having a close encounter with a UFO with footage shown on TV, we have speculated this over drinks since. Logic tells me Fred's was a case of unsure of position and the leans with the final dive into the ocean. There would not have been much of an oilslick in rough ocean conditions and commonsence tells me Fred's demise was on that fateful night, however wouldn't it be nice to think he actually went home with ET.