 | Drill and dimple holes for T-407 access cover ring and T-408 access cover. Countersink the nutplate rivet holes on the T-407. Deburr the access cover, and all the little holes. The instructions say you can rivet the T-407 access cover ring without Pro Seal, but I think I'm going to put some PS here. Especially, since I need to cover that tooling hole. |