5 hours ago5 hr I went through the PMS setup process whilst using the new progressive aircraft loading system. I noticed that as soon as I entered the fuel and gross weight, those numbers began increasing in real time. This suggests that rather than using fuel flow data to subtract from the initial total entered during setup, this page is actually directly connected to the GW and fuel on board values. (This is also true of the EFDARS thumbwheels, which adjust for every change in weight). This cannot be accurate, since if the aircraft were able to sense FOB and GW on its own, there would be no need to enter these values into the PMS (as it is on more modern aircraft) I suspect it's supposed to only have access to fuel flow values and subtract from the totalizer. However, I could be wrong....
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