Not too much has been done on the Cessna the last couple of weeks. That's because we needed to bring in the donated Rans S-12XL to begin changing out hoses in preparation for its condition inspection. But a few things got done. Parts were gathered and inventoried for the nose gear rebuild and installation. On the firewall, the auxiliary power plug and fuse set were installed. The task of re-riveting the attach bracket on the rear spar of the horizontal stabilizer was begun. This is part of complying with AD80-11-04, Service bulletin SE79-49. Bucking the rivets proved difficult and hard on the arms. More to be done on that.