MAIN ROTOR BLADE SCRATCH, NICK, OR GOUGE REPAIR continued
Spanwise sanding applies to the metallic
area only. The glass skinned area should
be sanded chordwise.
a. Remove scratches, nicks, or gouges from
main rotor blade (1) by locally sanding dam-
aged area in a spanwise direction.
(1) Blend and feather damage into surrounding
area. Use paper (item 133, App F).
b. Remove any remaining sanding marks and
finish blending damaged area by sanding in a
a spanwise direction. Use paper (item 135,
c. Wipe reworked area clean. Use methyl ethyl
ketone (item 124, App F), naphtha (item 127,
App F), or thinner (item 211, App F), and cloth
(item 52, App F).
d. Inspect repaired area.
(1) Check that all damage is removed and no
sanding marks remain (para 5.2).
(2) Check that depth of repair does not exceed
limits of Table 1 (para 5.2). Use depth gage.
GO TO NEXT PAGE