Well it would certainly be good to know what I have said to offend Andrew Tinsley! I have flown out of Lasham for many years and the aircraft servicing company that operates there have mainly been focussed on Boeing aircraft for very many years. In that time many 727's have flown in and out, some of which are privately owned by the likes of pop groups and high flying (literally) personages. A 'heavy' departed there on Wednesday and flew directly overhead, heading south, so Petersfield would be almost directly ahead. By the time I had gone out to see what was making the racket it was a tail-end view and appeared to be a 727, and with that amount of noise, not unusual for the type! Since I can only report what I believe to be true in that hope that I might have helped, in this case Nigel McBurney1, I am surprised to have this categorised as B/S by a member who had not been a respondent to the query that I was answering.
It would have been much more useful if Andrew Tinsley could explain what my error of observation had been and then we all could have shared in and learnt from his knowledge.