BEA flights organisational structure.
I was looking at one of the appendices for the accident of Trident G-ARPI and BEA appear to have an organisational structure based on flights rather than fleets. Among those called to testify are at least five Flight Managers of different numbered flights for the Trident. Would one of you please tell me how this worked and how many flights there were across the airline? I think that this structure continued into the 1980s so when did it disappear?