Hey guys, Maybe someone can help me with this. I absolutely love flying the PMDG 747's but sometimes when I set up my FMC it tells me that I won't make it because of not enough fuel. I use FSBUILD to make my routes and if I use the PSS777 or PSS757 it's ok. The route is completely fine. It's just when I load it up with the PMDG, even on some it says 6,000nm to the next waypoint when it's actually only like 132nm..HELP? Please?Thank you!

Hey guys, Maybe someone can help me with this. I absolutely love flying the PMDG 747's but sometimes when I set up my FMC it tells me that I won't make it because of not enough fuel. I use FSBUILD to make my routes and if I use the PSS777 or PSS757 it's ok. The route is completely fine. It's just when I load it up with the PMDG, even on some it says 6,000nm to the next waypoint when it's actually only like 132nm..HELP? Please?Thank you!

Hi, did you check the waypoint you inserted was unique? Sometimes you are prompted to choose between two or more intersections with the same name but with different co-ordinates. Plus, did you checked you have same AIRAC cycle in FsBuild and PMDG? Bye.

it says 6,000nm to the next waypoint when it's actually only like 132nm

This one looks like a wrong waypoint is calculated in the flightplan. There are quite many waypoints having the same names, so in such cases you must make sure you choose the right one.What's more how do you insert the flightplan? Do you type it manually or use an export option? I don' use FSB, but I use FSNav which has an option to export. Sometimes I have to make corrections.Another problem could be a missing waypoint for example due to AIRAC changes, so the next question is do you update Navigraph database?EDIT: Oops, Rick99 was a bit faster :(

To answer your questions guys I do select the right waypoints, it either gives me the frequency or the coordinates. And how do I do the updates?Dziekuje Rafal :)

This is a common problem with FMCs in the sim world (and very occasionally the real one too). Many VORs and some waypoints have the same names or identifiers. For example, there is a VOR in the middle of England with the identifier 'TNT' (an abbreviation of Trent, where it is located), but there is also a VOR in Honduras with the identifier 'TNT' (an abbreviation of Toncontin, where that one is located). So on occasion, you might load up a flight plan from say, Manchester in the UK, to perhaps Paris, that would use the TNT VOR along your route, but when you look through your flight plan, you see a jump of several thousand miles to the TNT VOR in Honduras because it happened to be at the top of the list of VORs with the name TNT in the FMC's database, when it should perhaps only be 35 miles from the previous waypoint if it would have picked the TNT VOR you intended to to choose. You will also see that it often has a bearing that doesn't seem to make sense either, i.e. all you other waypoint might be approximately in a southern direction, but one will be veering off to the west. That is FS loading up your flight plan and picking the wrong 'TNT' VOR and sticking that route into your FMC.You can check that by sticking your EFIS into plan mode and stepping through the waypoints on the FMC, and you will see your route line go off in a strange direction. So, what you need to do, is delete that waypoint in the FMC on your flight plan route (which will give you a route discontinuity gap), and then type in the identifier again in the FMC scratchpad, then insert it into the discontinuity gap. When you do that, if there is more than one identifier with that same name in your FMC database, you will be presented with a list, and you can select the correct one, which you will know because it will tell you the latitude and longitude coordinates for it. But if you happen to pick the wrong one from that list, you can always delete it and try again, picking a different one. Then all you have to do is close up the discontinuity gap on your plan, and you will be good to go.If you have never done that before, to close the discontinuity gap, simply click on the corrected waypoint, which puts it in the scratchpad, and then add it to the gap, by clicking on the select key alongside the gap. Since the plan will then have two waypoints that are the same when you do that, it should automatically get rid of one of them, and your gap will be closed.Al

I don't use FSBuild but do use FSNav, even so I always enter a flight plan manually in to the FMC. It saves such errors and is more realsitic to me.If you use the 'waypoint/airway/waypoint/...' method you can't enter an incorrect waypoint, providing the AIRAC is correct, because the FMC ties the waypoints to their airways. So in Al's example of TNT you would be presented with a list of TNT 'fixes' to select from with the most appropriate being at the top of the list.