TM 10-5411-201-14
T.O. 35E4-178-1
4-40. REPAIR OF PUNCTURE THROUGH BOTH SKINS AND CORE.
NOTE
The following procedures cover repair of panel puncture through
both skins and core, (damage area does not exceed 100 square in.
(645 sq. cm)). Use hand router to cut patches and openings.
a. Cut an opening through panel skin with portable electric router, Appendix B, Item 15, that is one inch
greater than damaged area. Avoid sharp corners in opening.
NOTE
Openings may be oval, circular, square, or rectangular with
rounded corners. Ensure core ribbon direction is same as panel.
Dry panel per paragraph 4-32, if required.
b. Cut a core plug (items 7-10, Appendix B) and two aluminum patches (Item 4, Appendix E) one to three
inches larger all around than cutout opening.
c. Mix sufficient amount of adhesive (Item 1, Appendix E) in accordance with manufacturer’s instructions to
bond two patches to core plug.
Change 4
4-175
