TM 55-1520-240-23-4
5-67.2
REPAIR BLADE FAIRING SKIN DAMAGE
(Continued)
5-67.2
2.
Outline damage area (1). Make circle or oblong
outline (2).
Do not wash contaminants into
damage area if acetone (E20) is used
to soften finish. Contaminants can
prevent satisfactory repair.
3.
Remove finish 1-1/2 inches outside of outline (2)
around damage. Use sanding block and abrasive
paper (E6). Use acetone (E20), if needed, to
soften finish. Complete finish removal. Use
abrasive paper (E7). Do not sand through wire
mesh.
4.
If wire mesh diverter (3) must, be replaced,
expose wire mesh 1-1/2 inches outside of outline
(2).
5.
Prepare skin patch (4) as follows:
a.
Position piece of fiberglass laminate (E168
or E168.1) over repair area with fibers at 45º
to chord.
b.
Draw outline on fiberglass laminate (E168
or E168.1) 1 inch larger than damaged
area outline (2). Use pencil compass and
straightedge.
c.
Cut skin patch (4). Smooth rough edges.
Use abrasive paper (E7).
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