On a most recent flight from Louisville to Ontario, California engine after engine spooled down 3, 1, 2 in that order as I was on the dog leg to intercept the localizer for run 26l. I typically ignored such reports I considered erroneous when reading "Insufficient Fuel" for my flight. Nearly all payware add-ons I have report this and are wrong by several thousand pounds of fuel. So I got in the habit of ignoring it until this morning when that eerie silence fell and the FMS reported "Confirm engine loss of power" or something like that. I cried as I smeared myself and about 500,000 pounds of plane and cargo all over Ontario California.I have learned my lesson thanks to PMDG. I should also investigate the feasibility of using a rudimentary fuel calculator in the future too. :(

Aha!! PMDG goes for realism! So, if you get fuel warnings, you can safely assume that this time they are correct!!!!A tip: Before you push back, check your fuel reserves and the prog page. I always check (in the PROG page) the estimated fuel at destination.This FMS is pretty accurate, it also comes in handy as a fuelplanner (since Boeing has restrictions :( on RL fuel-data).Happy landings,Wijnand Lindelauf (EHBK)

The progress page tells you how much fuel the FMC thinks you will have when you land. If this goes below your selected reserve amount, then you get the warning.

I can echo the last two replies because I too use the PROG page to give me a rough idea how much fuel I will have at my destination,and as long as I am in double digits I can safely ignore the Insufficient Fuel warnings provided I do not add a STAR later on closer to the landing destination,which is where a good flight plan comes in handy.

Just as a note, the "insufficient fuel" warning comes on when there isn't enough fuel for the route AND whatever you have entered as reserves (most of us including me just leave it set to the default). It doesn't necessarily mean you be running on fumes, it just means that you'll (usually) have less of a reserve than is legal.EDIT: nevermind, reread what Paul wrote. I basically repeated him.

The estimate can also be very wrong if you aren't filling in the winds data. Coming from the East coast to West you usually fight strong headwinds, so the estimated fuel can even climb to a higher number as you are flying