I have developed a problem with my MD11 when after doing a perfectly behaved flight (in other words no peceived problems on the flight) will, when rolling out after touchdown, suddenly just go full left rudder and refuse to steer to parking. I have turned the auto pilot off and no matter what I do the rudder stays full left. Shut the engine down and turn of the electrics and the rudder is useable again. Appears to be the auto pilot but what is causing it. Only does it on the MD11 not the 737 800. Any thoughts would be appreciated.Thanks Rod

If you look further down the different forum sub-sections here, you'll find one dedicated to PMDG. This is where to go to get the fastest and best answer to your question.Here's a link: http://forum.avsim.net/forum/353-pmdg-md-11/