Re: 777?
Never flew on a comet but I did a few times on the Nimrod variant which I worked on at BAe Woodford, such a shame to see them take chainsaws to them the other year - I fitted the flight refueling probe to many of them.
Dan Dare used to fly the first HS 748 for many years (G-ARAY).Gary was housed in the back sheds at Manchester airport.