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Johns Web Site
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Date: 4-24-2016
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Number of Hours: 5.00
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Manual Reference: 21-16/21-17
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Brief Description: Bottom Skin Installation and Reiveting
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Completed step 5 - Reached through the openings in the sides of the fuselage or through the access holes in the F-1276 Bottom Skin, then clecoed the F-1204Z-L & -R Bottom Stiffeners to the bottom skin as shown in Figure 1. The hole in the vertical flange of the bottom stiffeners located the front of the part. Completed step 6 - Clecoed the F-1268A,B,C,D, & E Doublers to the F-1276 Bottom Skin, to the F-1204Z-L & -R Bottom Stiffeners, and to the F-1204A & D Center Section Bulkhead flanges per Figure 1. Completed step 7 - Except for the holes indicated in Figure 1, riveted in place the F-1268A,B,C,D, & E Doublers, the F-1204Z-L & -R Bottom Stiffeners, and the F-1276 Bottom Skin using the rivets called out in Figure 1 with LP4-3 rivets. Completed steps 1 and 2 page 21-17 - Separated the F-1236 Step Attach Angles by removing the hatched areas shown in Figure 1. As shown in Figure 2, made the F-1236B-L & -R Outboard Step Attach Angles by trimming the flanges of two of the angles separated in Step 1 – made an error since I had trimmed the 1 inch dimension prior to separating the angles so two of the angles will need to be replaced!. Completed step 3 - Separated the F-1251 Nutplate Bracket into individual parts by removing the hatched areas shown in Figure 3. Completed step 4 - Machine countersunk the F-1251-L & -R Nutplate Brackets for the nutplate attach rivets called out in Figure 3, then riveted the nutplates in place
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Bottom skin all clecoed in place
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Bottom skin riveted
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Broken edge transition
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