Hey buddy, I don't know the trouble then.  Be sure to cycle all interior and exterior views.  If this doesn't help, one thing I've noticed which helps to clear "odd" problems in this plane is to delete any saved flights which 757 is selected (or possibly all saved flights).

I had the "RAT Unlocked" bug for many weeks, and finally decided to delete all my saved flights.  Since this, all problems with this plane have gone away.

Hope it helps. ;D