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Date:  10-19-2020
Number of Hours:  4.50
Manual Reference:  21iS/U-21,22
Brief Description:  Bottom F-01276-1 Skin Prep and Install

Completed steps 1-6 page 21iS/U-21.

Step 1 (iS): Go to Step 2.
Step 2: Dimpled the nutplate attach holes around each access hole in F-01276-1 depicted in Figure 1.
Step 3: Riveted nutplates to F-01276-1 at the locations dimpled in the previous step.
Step 4: Riveted F-00020 to F-01276-1 per the call-out.
Step 5: Applied Boelube to the stud screw threads.
Step 6: Installed the six system block studs and nuts in F-01276-1 at the locations depicted in Figure 1.

Completed steps 1-4 page 21iS/U-22.

Step 1: Brokw the edges along both sides and aft edge of F-01276-1.
Step 2: Clecows F-01276-1 to the fuselage.
Step 3: Clecoed F-1204Z-L & -R to F-01276-1 as shown in Figure 1. The hole in the vertical flange of each F-1204Z-L & -R indicates the fwd end.
Step 4: Clecoed F-1268A,B,C,D, & E Doublers to F-01276-1, to F-1204Z-L & -R, and to F-01204A-1 & D-1 flanges. Precurved doublers for a tight fit if/as required before riveting.
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