In Part 26, we almost completed construction on the Step Attach Assembly. The last step is to install the the remaining five rivets circled below. The top and bottom are CR3213-4-2 cherry rivets and the other three are AN470AD4-5 solid rivets. This is the right Step Attach Assembly.....
.....and the left Step Attach Assembly.
Now, the left and right Step Attach Assemblies are riveted to the F-01405 Bulkhead as indicated in plans excerpt below.
The rivets are installed in the F-01425-L & -R Baggage Ribs flanges, through the F-01405 Bulkhead, through the F-01424-L & -R and F-01425-L & -R Baggage Ribs flanges. Here is the left forward side showing the shop head sides of the rivets (looking aft).....
.....and the manufactured head side (looking forward).....the right side was completed the same way.
This is the F-14128-R Seat Belt Lug Bracket (riveted to the F-01424-R Baggage Rib) riveted to the Bulkhead. The bottom rivet is a LP4-3 blind rivet due to the limited space available to shot or buck the rivet. The left side was completed the same way.
