Here's a video I made to demonstrate the LNAV drift problem I and others here have encountered with the 744X. This is on a Trans-Atlantic flight between EGCC and KMCO! The video begins by reengaging LNAV after a commanded ATC coarse correction and intructions to resume navigation. Notice it doesn't take long for the plane to drift off coarse far enough for ATC to issue another coarse correction.http://youtube.com/watch?v=UHfVr-Y_zfQ

Unfortunately, your video shows too much of the cockpit and not enough detail on the ND to be able to understand what exactly you're trying to point out.If you like, please reshoot it, this time pointing to the ND close enough so we can see what you mean.If it helps, though, I'll say that we've paid some more attention to this issue for our upcoming Service Release, so it should feel a bit tighter now.

just checkin, have you manually entered legs into the FMC?If so check the LEGS page an see that your tracking the right one because i had a problem where my ROUTE page didn't progress after i had manually entered a STARJosh

>If it helps, though, I'll say that we've paid some more>attention to this issue for our upcoming Service Release, so>it should feel a bit tighter now.what about the 737 having the same problem? i dont have the 747X and im having the same problem. I'm running both the 737 and the 747 for FS9

>just checkin, have you manually entered legs into the FMC?>If so check the LEGS page an see that your tracking the right>one because i had a problem where my ROUTE page didn't>progress after i had manually entered a STAR>>JoshNo it was built with FSBuild.