Figure 2-2.
Flush Patch Repair of a Small Hole.
Accessibility to the damaged area and procedures outlined in
the appropriate technical manual determine how damaged skin is
to be repaired. Most of an aircraft's skin is inaccessible from
the inside for making repairs. This skin is designated closed
skin. Where aerodynamic smoothness is not required, this skin
can be repaired conventionally, using specified standard rivets.
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