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Dual FMC failure - Freeze during flight

Featured Replies

Hi everybody,

 

Maybe it is a bug from FSX, but when I simulate a dual FMC failure in cruise and I use the ALTN LEG page to go direct to a point or a fix with coordinates, the sim freeze and go out to windows.

 

Is anybody has the same issue ?

 

Thanks,

Vincent

 

 

  • Commercial Member

Try a reinstall.

 

That should be the last step, honestly. Re-installs are thrown around as fixes way too often around here.

 

 

 

Is anybody has the same issue ?

 

I haven't seen this issue. Please submit a ticket at http://support.precisionmanuals.com/Main/Default.aspx

Kyle Rodgers

Actually it sounds similar to one problem i had with freezes and using the FMC. The solution was to modify the FSX.cfg to have [JOBSCHEDULER]

AffinityMask=14

 

and then i reinstalled all the directX and Visual C+ runtimes. 

captainhenrychen-1.jpg


Boeing777_Banner_Pilot.jpg


 


James Bennett

  • Commercial Member

Actually it sounds similar to one problem i had with freezes and using the FMC. The solution was to modify the FSX.cfg to have [JOBSCHEDULER]

AffinityMask=14

 

and then i reinstalled all the directX and Visual C+ runtimes. 

 

Good call - didn't even think of that. Thanks!

Kyle Rodgers

  • Author

Hi,

 

Thanks for the replies.

 

I think also that re)installing everything without looking for the trouble is insane.

 

So, this is what I tried :

 

Set AffinityMask=14 STILL FREEZING

Set AffinityMask=14 + Re-install DirectX and Visual C+, still freezing STILL FREEZING

Flying with 1 FMC only and entering a direct to coordinates OK

Flying with 2 FMCs failure and entering a direct to coordinates STILL FREEZING

 

Any other ideas ?

 

Thank anyway, I hope it will help for the P3d version.

 

Cheers,

Vincent

  • Commercial Member

 

 


Any other ideas ?

 

Submit a ticket at the link above. There might be something that's been seen before, and if not, tracking can be started on it.

Kyle Rodgers

Are you entering the coordinates in the correct format?

(it shouldnt crash things....but still)

 

What happens if you go direct to a waypoint that is still in the CDU?

(the FMC flight plan should be continuously copied and update to the CDUs so that when both FMC fail you still have your complete original route in the CDU for what is called alternate navigation).

Rob Robson

Are you entering the coordinates in the correct format?

(it shouldnt crash things....but still)

 

What happens if you go direct to a waypoint that is still in the CDU?

(the FMC flight plan should be continuously copied and update to the CDUs so that when both FMC fail you still have your complete original route in the CDU for what is called alternate navigation).

 

This made me think, some freezes i was having were initially caused by an out of data airac for navdata, inputting some waypoints caused a subsequent freeze around 30 seconds later if the database didn't recognise them.

captainhenrychen-1.jpg


Boeing777_Banner_Pilot.jpg


 


James Bennett

  • Author

Hi,

 

I sent a ticket for this problem.

 

Cheers,

Vincent

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