Technical data

walkway coating need not be topcoated on interior walkways,
ramps, steps, and doorways in high traffic areas. Before
applying the non-slip coating, wipe primed surface with a
clean lint-free cloth with solvent per Table 3-2, if necessary.
Thoroughly mix the material, preferably with a mechanical
shaker. The coating will normally have the proper viscosity
for brush application. Application by brushing is recom-
mended as the material is primarily formulated for this. Apply
quickly and avoid brushing previously coated areas that are
wet. Allow to dry at least 30 minutes but not more than 45
minutes between coats. Apply by spraying only when large
areas are involved. Apply the coating (Type I and II) to a dry
film thickness of 10 to 12 mils on aircraft exterior surfaces
which weights 15 to 20 ounces per square yard for a Type I
coating, and 20 to 25 ounces per square yard for a Type II
coating. A 30 to 40 mil thick coating is recommended for
non-aeronautical interior surfaces.
6.12.19.5 Drying Time. Type I and Type II coatings dry
tack free in 15 minutes, for re-coating in 30 minutes, through
in 6 hours, and to full hardness in 24 hours.
6.12.20 Coatings, Polyurethane, Rain Erosion Resis-
tant For Exterior Aircraft and Missile Parts, MIL-C-
83231/SAE AMS-C-83231.
6.12.20.1 Characteristics. This material is available in
two types each with two classes. Type I is an electrically
nonconductive rain erosion resistant coating, and Type II is an
antistatic rain erosion resistant coating. Class A material is
not dependant on moisture or high relative humidity for
curing and Class B is dependent on them. Primer and topcoat
components are furnished together as a kit. Specific aircraft
directives specify the area to be coated and the materials to be
used.
6.12.20.2 Uses. Classes A and B, Types I and II
coatings are intended for protection of exterior laminated
plastic parts of high-speed aircraft and missiles from rain
erosion while in flight. Classes A and B, Type II coatings also
discharge and dissipate static electricity, to prevent radio and
radar interference.
6.12.20.3 Thinning. Thin as recommended by manufac-
turer and/or TO 1-1-24.
6.12.20.4 Application. Apply per TO 1-1-24 and/or as
recommended by the manufacturer.
6.12.20.5 Drying Times. Drying times are per TO
1-1-24 and/or as recommended by the manufacturer.
6.12.21 Coating System, Polyurethane, Non-
Yellowing White, Rain Erosion Resistant, Thermally
Reflective, MIL-C-83445/SAE AMS-C-83445.
6.12.21.1 Characteristics . This material is one type of
thermally reflective, non-yellowing, white rain erosion resis-
tant polyurethane coating for glass fabric reinforced plastic
laminated and other plastic parts used as exterior surfaces of
aircraft and missiles.
6.12.21.2 Uses. This coating is intended to protect
exterior laminated plastic parts of high speed aircraft and
missiles from rain erosion and thermal energy while in flight.
This coating cannot be used on radomes and other plastic
parts that have a requirement for protection against static
electrical charges, because it is not electrically conductive.
6.12.21.3 Thinning. Thin as recommended by manufac-
turer and/or TO 1-1-24.
6.12.21.4 Application. Apply as recommended by the
manufacturer and/or TO 1-1-24.
6.12.21.5 Drying Times. Drying times are as recom-
mended by the manufacturer and/or TO 1-1-24.
6.12.22 Leading Edge Polyurethane Rain Erosion
Resistant Tape.
6.12.22.1 Description and Use. This tape is used to
provide rain erosion protection for the wing, vertical and
horizontal stabilizer, and any other leading edges aft of the
engine intakes.
6.12.22.2 Material and tools to be used are listed below in
Table 6-2.
TO 1-1-8
6-23