REPAIR OF PUNCTURE WITH CORE FRACTURE.
The following procedure covers repair of any
shelter panel punctured skin with core fracture,
(damaged area not exceeding 25 square in.
161 sq cm)). Use hand router to cut patches
W A R N I N G
Wear safety goggles for eye protection from flying
Dry panel per paragraph 4-31, if required.
Cut an opening through panel skin with a portable electric router,
Appendix B, Item 15, that is one inch greater than damaged area.
corners in opening.
Peel damaged portion of skin from core by lifting and rolling skin.
Remove all loose core from exposed core area with compressed air.
patch (Item 4, Appendix E) one inch larger all around
Layout and drill holes as shown.
Mix sufficient amount of adhesive (Item 1, Appendix E) in accordance
with manufacturers instructions.
Pack adhesive in core cells to fill exposed area above surface of
Apply heat using tripod base heat lamp, Appendix B, Item 16, at
200°F (93.3°C) for 40 to 60 minutes to fully cure adhesive. Alternate cures:
150° F for 4 hours or 75° F for 72 hours.