Completed step 1 page 21-19 – dimpled all #30 holes and #40 nutplate attach holes on both F-1213-L&R step floors as indicated in Figure 1. Completed step 2 – dimpled the nutplates per Figure 1 and then riveted them ti F-1213-L&R per Figure 1. Completed step 5 page 21-17 - Clecoed the F-1236A-L Inbd Step Attach Angle to the F-1212-R Step Rib and the F-1236B-L Outbd Step Attach Angle to the F-1212-L Step Rib as shown in Figure 4, then match drilled #30 the indicated holes of the F-1202F Bulkhead into the step attach angles. Repeated for the right side. Completed step 6 - Final-Drilled 1/4 the hole in the F-1202F Bulkhead and F-1236B-L Outbd Step Attach Angle that is indicated in Figure 5. Completed step 7 - Temporarily bolted the WD-1233-L Step to the F-1202F Bulkhead and F-1236B-L Outbd Step Attach Angle. Completed step 8 - Made the pad of the WD-1233-L Step as horizontal as possible keeping the inbd, top corner of the step even with or below the beginning of the radius of the F-1202F Bulkhead per Figure 5. Once the step was positioned, match-drilled 1/4 the inboard hole of the step into the bulkhead and F-1236A-L Inbd Step Attach Angle then removed the step. Completed step 10 - Repeated Steps 6 through 8 for the right side of the fuselage using the WD-1233-R Step. Completed step 1-6 page 21-18. Removed the F-1202F Bulkhead and the F-1236A-L & B-L Step Attach Angles from the fuselage. Used the bolts shown in Figure 1 to secure the F-1251-L Nutplate Brackets to the step attach angles and bulkhead. Aligned the F-1251 Nutplate Brackets vertically on the F-1236A-L & B-L Step Attach Angles, then match-drilled #30 the two holes of the F-1202F Bulkhead and step attach angles into the nutplate brackets as shown in Figure 1. Deburred the holes in the F-1202F Bulkhead, the F-1236A-L & B-L Step Attach Angles, the F-1251-L Nutplate Brackets, and the F-1212-L & -R Step Ribs. Primed the F-1236A-L & B-L Step Attach Angles. Riveted the F-1236A-L & B-L Step Attach Angles to the F-1212-L & -R Step Ribs using the rivets
