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Date:  9-21-2022
Number of Hours:  1.00
Manual Reference:  
Brief Description:  Countersunk Common Holes of Inbd Top Skin

Countersunk #40 Common Holes of Inboard Top Skin and the Doublers below. Per the instructions, the countersunk holes are about 0.005" shallow where the rivet heads fits ever so slightly proud.

Filed the forward corners of the Inboard and the Outboard Skins where they overlap. They both taper towards the points of the skins with the goal of having the overlapping parts having a total thickness of 0.032", the same thickness of the fuel tank skins that will butt up to the top skins. The filed area were buffed with a ScotchBrite whee to remove the filing scratchesl. Finally. the filed areas were sprayed with some SEM etching primer.
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Inbd Skin Countersunk

Inbd Skin Countersunk

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Taper filed areas

Taper filed areas

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Overlap now about 0.032

Overlap now about 0.032"

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