I think the problem with the aircraft you have described in your post is one of the gauges. To solve it you'll need to install a module called FSUIPC from the following site
http://www.schiratti.com/dowson.htmlOnce installed you'll need the free codes to register F16.gau which I'm hoping is the problem.
Another thing which could be causing the problem is FSSound.dll and/or Gaugesound.dll the cure for this is to add the following lines to the FS9.cfg.
[OldModules]
fssound.dll=1
gaugesound.dll=1
To find the fs9.cfg goto
c:/documents and settings/(your user name)/application data/microsoft/fs9
You'll probably need to unhide hidden files and folders.
I hope this helps.
cheers
eno
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