I was perusing some pictures of the Millennium Falcon, especially the cockpit, and it got me wondering how many people we've seen in the cockpit. As far as I can recall, the list is limited to Han, Chewbacca, Luke, Leia, Obi Wan, C-3PO, Lando, and Nien Nunb.
This led me to the present question:
In the original trilogy, has R2-D2 ever been seen inside the cockpit of the Millennium Falcon?
As a bonus question, if he hasn't been in the cockpit, do we know why? I imagine that it might be difficult to get him in and out without assistance.