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747X track offset
27 replies to this topic
Posted 13 March 2010 - 01:27 PM
Hi, I have a 747x (and 747 FS9 also), and run it on W7 64bit. During cruise it has a serious LNAV problem, due to a track drift to the right. Setting again the next waypoint in the FMS doesn't solve the problem; the purple line goes always 2NM to the left; reaching the waypoint the autopilot try to catch it, passing it 747 runs out of the track again. Tried ti reinstall without success. Any suggestion about it? thanks rob
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Posted 13 June 2010 - 02:03 PM
Hi,I have a related problem: Enroute on long distances between two waypoints the plane drifts off-route to the right and comes back to overfly the next waypoint correctly. Afterwards happens the same ...This error occurs even at the MD11 and the B744, both FS2004. Using the flight1 registry repair tool does not solve the problem! :(EDIT: This problem startet while flying on a NAT ...
Posted 14 June 2010 - 10:11 AM
A screenshot of your 2D screen showing PFD and ND and the FMS popup with the LEGS page showing.Need at least one with ND showing aircraft offset and maybe a second one showing aircraft just before crossing next waypoint to see what you are describing. Just two should do it. I doubt I'd watch a video.
Posted 17 December 2011 - 08:11 PM
After a long, long time I'm back with my issue! Apologies for not answering earlier!The problem is still the same - I'll show it now on some pics:This is my track!As you can see, the plane is first on course, but it's "crabbing" like hell (about 20deg) to the wrong side - as there is a strong wind from the west I expect to turn the nose into the wind, so it should "look" to the west! But the plane does not, it puts her tail into the wind! Very strong behavior ... sorry but for this I have no pic!So I tried to get her back on course and klicked the next waypoint on the LEGS page into the scratchpad and executed - the plane should now fly straight on! But what happened? The plane lefts her track to the right and the distance between the track and the plane grows up:You see the plane tries to reach the waypoint and turns her nose more and more towards ... when it reaches the waypoint, it is afterwards flying on it straight on ("crabbing") until I once again re-entered the next waypoint by clicking and executing. Then the problem is back:Note the growing of the drift within 6nm! It becomes more and more until half of the distance to the next waypoint is reached - afterwards it goes back to hit the waypoint.Can you now see what I mean? I hope you understand my confuse sentences - it's not my native language! ;)I tried the Flight1-Registry repair with no effect ... I've read sth. about a duplicate or corrupt AFCAD-File which could make this problems ... what about magdev.bgl and magvar.bgl? These were also discussed in the www ... What do you think? Don't want to reinstall my 70 (!) GB flightsim with its hundreds of sceneries etc! EDIT: I tried it also with no weather - without any effect on this problem!
Posted 21 January 2012 - 04:25 AM
I am having the same problem. As an example the track is showing 100 degrees and the purple course line along with the FMC are showing 110 degrees to the next waypoint. So the nose is 10 degrees left of where it should be. This happens regardless of the length of the leg 4 NM or 400 NM or any other values.I haven't flown her for awhile but I recall the MD11 doing the same thing.I'll try the 737NGX this weekend to see if it has the same problem.I am running FSX on Windows 7 64 bit.Michael Reilly (aka kees)
Edited by keeska, 21 January 2012 - 04:27 AM.
Posted 26 February 2012 - 02:33 PM
If the registry error is ruled out, then next step is to eliminate all add-on scenery. You don't uninstall, only need to uncheck the boxes in the library manager and they will be there when you check the boxes again. Also, what about ILS approaches, do those work okay?
Posted 26 February 2012 - 02:57 PM
I only have stock scenery. Basically what it looks like is what would happen with a huge crosswind component at altitude..i.e. plane course intersects magenta line and then is 'blown' along it; however, what happens is the plane tries to turn 'in' to the VOR or waypoint as it gets closer. Also, I noticed that the plane will drift further from the intended FMC course. I just did a clean install of the 747x and it is doing it, even with updated navdata.It is happening to me on the VTU5.RZS departure out of LAX, and starts when going direct to RZS.