I noticed any time the CS757 hits bad weather or turbulence the AT system pretty much has a mind of it's own. Once it goes overspeed you have to disengage the system, control the throttles manually, add speed brakes, etc just to get the plane to slow down. I tried searching the forums to see if others have the issue but it's not very user friendly when trying to locate things. Anyways I'm running all the latest updates and I will hanger it until this issue gets resolved.