“Numerous users have reported that installing FSUIPC5 into prepar3d is causing the 747 to cease running properly.
We have reached out to Pete Dowson, the creator of FSUIPC, to provide him with data presented to us by our customers. We have asked him to please provide us with feedback as to why this happens, and to please engineer a correction to his software in order to prevent it.
This type of problem does occasionally come from FSUIPC, and Pete has a strong track record of quickly fixing the issues so that everyone can run their sim normally. We will make an announcement via our forum once he has updated his product to correct the issue, but in the mean time you can simply remove the FSUIPC5.dll from the <P3D root folder>\Modules folder and your 747 will return to normal operation.
Ryan Maziarz
Technical Support
PMDG Simulations, LLC
www.precisionmanuals.com ”