Peel damaged portion of skin from core by lifting and rolling skin.
Trim core area with a knife to same size as opening while leaving
small amount of core material on opposite skin.
Cut aluminum patch 1 1/2 inch (3.8 cm) (Item 4, Appendix E) larger
all around than cutout opening.
Layout and drill 1/8 inch (3.18 mm) diameter holes in patch.
Cut core material (Items 7-10, Appendix E) same size as cutout
Core plug should be flush with or slightly lower than panel skin
Center patch over cutout opening and mark patch outline on panel
Drill No. 30 diameter holes in panel skin with patch as template.
Sand all paint from panel skin within marked area with sandpaper
(Item 17, Appendix E).
Index patch and panel skin with
with same orientation.
Deburr drill holes and sand all
a mark to allow patch to be replaced
paint from panel skin within marked
Clean loose core material, dust, and chips from cutout opening.