I have read what I could concerning this issue. I understand that refueling time is calculated based on the difference between what was in the tanks when truck arrived compared to what was subsequently entered into the tanks via the fuel page. Fuel truck will then stay parked for that calculated time span, correct? I use ConcordeX, NGX, PMDG 747, and F1 Super80 pro, all of which use their own special pages to enter fuel load. When I simulate with these aircraft, should I first call the fuel truck and then when it arrives open the special loading page for that aircraft and enter the amount I will be using? Must I then immediately exit that fueling page? Will the fuel truck then use that fuel addition for timing in the same way it does for aircraft using FSX fuel window? Must I immediately exit the page or, as in the case of the NGX, can I just continue with my normal sequence of preflight (or CDU inputs)? What is the correct GSX procedure for these special commercial add-ons so that the fuel truck will spend correct loading time?
I did a test flight with ConcordeX and when I loaded fuel through the interface window and then exited, the fuel truck came, waited 25 seconds and then departed. Amazing for a fuel load of almost 200,000 pounds!
On another Concorde issue: GSX would not let me pushback after I started the middle two engines at the gate which is SOP! I think that you must require that I request Pushback first and THEN when commanded, start the inboard engines(?) I started first and then requested pushback and it would not allow it.
Craig