Completed steps 4-8 page 20iS/U-03 as follows: Step 4: Match-Driledl #30 F-01204-1 using F-01204D-1 as a guide. Began at the center of F-01204D-1 and progressively drilled and clecoed outboard. Step 5: Removed clecos and AN4 bolts from F-01204D-1 and F-01204-1. Deburred all match-drilled holes. Step 6: Dimpled #30 the holes in F-01204D-1 corresponding to the flush rivet call-outs shown on Page 20iS-06, Figure 1. Step 7: Machine countersunk #30 the holes in F-01204-1 to fit the dimples in F-01204D-1. Per Page 20iS-06, Figure 1 for flush rivet locations per Figure 2 for countersink detail. Step 8: Machine counterunk #30 the two outboard holes, noting their orientation, in F-01204D-1 depicted in the Figure 3 detail Completed steps 1-4 page 20iS/U-04 as follows :Step 1: Separate F-1204P as shown in Figure 1. Dimpled #30 the holes in F-1204P-L & -R where indicated. Per Figure 1 call-out. Step 2: Separated F-1204T by removing the hatched areas shown in Figure 2. Step 3: Separated F-1204U by removing the hatched areas shown in Figure 3. Step 4: Bent the ends of the bottom flanges of F-1204U-L & -R up to fit the inside radius of the F-01204-1 channel as shown in Figure 4 per Figure 5 for radius and part location.
