TB 1-1615-351-23
NOTE
Any unused kits of the coating should be retained for touch up and repair of the
coating.
(3) Touch up as follows:
(a) After the coating cures, runs and sags may be touched up using sandpaper backed by a hard sanding
block.
(b) Make sure drain holes are open and free of the coating.
(4) Install rotor blades per the -23 aircraft TM.
NOTE
Cure time before track and balance is 8 hours.
f. Rotor Blades - Erosion/Spark Guard Coating. (Repair).
(1) Peeling and Tattering. This condition is most prevalent where the material is thinnest. The blades should be
inspected after flight and the loose material, if any, should simply be trimmed off with a sharp knife. It is not necessary to
re-coat the bare area until there is enough area to justify a coating cure cycle of six or more hours.
(2) Nicks and Cuts.
CAUTION
Be careful when using a knife for trimming. Do not cut into the blade. The safest
technique is to work the knife under the loose material and cut parallel to the blade
surface.
3-85
