Actually, I would have flown the BA4149 on the 23rd August 1995, continuing on 24th August to Geneva at 15h35 ... which must make it BA730, right, if Swissair 833 left at 15h05? Unless I wrote the wrong departure time down, which is possible. I didn't have a great year in 1995, so I might have been a lot more careless about things that I care to remember. The fact that I overnighted in London on the 23rd, and left on a departure time that was just more than 24 hours later makes me think it was probably a trip made up of two tickets (I recall now that booking all the way through to INV from Switzerland was a lot more expensive in those days than just making two separate tickets. In those days I was still able to use the student travel agent, SRR, SRS or something like that. (EDIT- just remembered it was STS Travel).
Really interesting set of data. How to you extrapolate the BA4149 flight number from BAW27E? Good detective work!
BA flight numbers out of Heathrow were even numbers, and inbound odd numbers, right? And still are, I guess.
For the inbound flight on the 3rd August from GVA with a departure noted at 16h35, can I assume that was BA729? I think there was a gap in the Swissair timetable around that time, between early afternoon and early evening.
I have a Swissair 1999 timetable here, and it shows GVA-LHR SR832 leaving at 13h30, then SR836 leaving at 18h30. Maybe in 1995 there was a SR834 between the two, but I reckon not. I recall always being aware of this mid afternoon gap.
I also have a BA timetable, but dating from 2001, which lists GVA-LHR BA727 leaving at 13h35, then BA729 leaving at 16h55 (there is also a BA743 at 14h25 on Saturdays and Sundays).