Center patch over damaged area and drill No. 30 diameter holes in
Use holes in patch as a template.
Index patch and panel skin with a mark to allow patch to be replaced
in same orientation.
Deburr all drill holes.
Methylethylketone is flammable and toxic and shall
be used only in a well-ventilated area away from
all sparks or open flame.
Gloves should be worn
Wipe damaged area and patch with a clean cloth (Item 5, Appendix E)
dampened in solvent (Item 20, Appendix E) and immediately wipe solvent from
surfaces with a clean, dry cloth.
Do not allow solvent to get into exposed
Mix sufficient amount of adhesive (Item 1, Appendix E) in accordance
with manufacturers instructions,
Pack adhesive in puncture and all
exposed core cells.
Use mixing sticks (Item
21, Appendix E) to pack adhesive and obtain
a smooth surface.
Apply a thick film of remaining
adhesive to mating surface of patch.
Place patch over prepared area in same
orientation used in step f.
Align holes and, using hand blind
riveter, install 1/8 in. (3.18 mm) diameter
blind rivets (Items 15-16, Appendix E).
to paragraph 4-32.)
Clean repaired surface.
Caulk around patch.
(Refer to paragraph 4-42.)
Refinish in accordance with paragraph 4-43.