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306TD Web Site
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Date: 10-2-2021
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Number of Hours: 4.00
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Manual Reference: 21iS/U-19
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Brief Description: Lower Fuselage Corner Skins
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Seperated F-1275A, B, C, D, E, and F and F-01275F-1 Fuselage Corner Skins into -L & -R parts then filed and deburred. Dimpled #40 the nutplate attach holes in the F-01275F-L-1 & -R-1 and dimpled #30 the rivet holes called out in Figure 2 page 21iS/U-19 in the same two parts. Riveted 2 per skin K1000-08D using AN426AD3-3 rivets to the same two parts.
Turned the fuselage upside-down on the work table and cleco'ed the F-01275F-R-1 to the F-1253-R, F-01215-R-1, and F-1204P-R per figure 3 same page then one after the other cleco'ed in place the F-1275E-R, D-R, C-R, B-R, and A-R per same figure. Riveted F-1275F-R-1, B-R, C-R, D-R, E-R, & F-01275-R-1 to each other per same figure, then riveted F-1275A-R to F-1203B-R and riveted F-01275F-R-1 to F-1204P-R except for the four holes in figure 3 and skipped the corner skins to F-1253-R or to F-01215-R-1 per same figure.
Cleco'ed the F-01275F-L-1 to the F-1253-L, F-01215-L-1, and F-1204P-L per figure 3 same page then one after the other cleco'ed in place the F-1275E-L, D-L, C-L, B-L, and A-L per same figure. Riveted F-1275F-L-1, B-L, C-L, D-L, E-L, & F-01275-L-1 to each other per same figure, then riveted F-1275A-L to F-1203B-L and riveted F-01275F-L-1 to F-1204P-L except for the four holes in figure 3 and skipped the corner skins to F-1253-L or to F-01215-L-1 per same figure.
Cleco'ed the F-1274-R to the F-01202F-1, F-01212-R-1, and F-1275A-R per figure 4 same page. Riveted F-1274-R to F-1257A-R excluding the call outs in figure 4 DO NOT RIVET! using LP4-3 rivets. Repeated this paragraph for the left side of the fuselage.
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