Groundfloor
2. Your paper flightplan generated on the ground by a ground based computer becomes less and less relevant as the ZFW changes - when do you ask for a new one. 4000 Kg seems to work for the 340.
5 tonnes on a 747.
You clearly do not understand how the Provisional Loadsheet system works, perhaps we haven't explained properly - either way, we have been using them for 18+ years in BA, with advances (ACARS etc rather than voice) and belts and braces in procedures along the way to try to ensure integrity of the calculations for performance. Thus far it has worked for about 700 departures per day (x 365 x 18) = 4.5 million flights, without any MEL/AKL type incidents.
When you can statistically argue your case from a position of knowledge and experience, then come back and argue it
