TM 10-5411-201-14
T.O. 35E4-178-1
4-38.
REPAIR OF DAMAGE WITH EXTENDED CRACKS.
NOTE
The following procedure covers repair of extended
cracks (such as a long cut) in panel skin, (damaged
area does not exceed 36 in. (91.44 cm) square).
a.
Dry panel per paragraph 4-32, if required.
b.
Using portable electric router, Appendix B, Item 15, cut aluminum
patch (Item 4, Appendix E) one inch larger all around than damaged area.
WARNING
Wear safety goggles for eye protection from flying
metal chips.
c.
Layout and drill 1/8 in. (3.18 mm) holes as shown.
d.
Stop-drill all cracks with No. 30 (3.27 mm) drill bit.
e.
Center patch over damaged area and mark patch outline on panel skin.
f.
Sand all paint from damaged skin within marked area with sandpaper
(Item 17, Appendix E).
4-170
