The other factor in the Tristar incident was a late touchdown. The slope from the Chevin to the threshold can give an impression that the aircraft is low, and there was no ILS in those days. One of the Air Traffic staff was filming it, and gave the film to the AAIB. I recall that touchdown was after the intersection with 10/28 (or whatever it is now). I was flying the F27 from LBA at the time, and we were able to continue operations using 28.