TM55-1500-345-23
cleaning be performed according to safety proce-
dures described in this TM. Occupational Safety
and Health Administration (OSHA) and National
Spray equipment for touching up inte-
Institute of Safety and Health (NIOSH) require-
rior crewstation surfaces is not to be
ments. Prior to operations, the painting facility
used, except by overhaul, manufacturer
and processes must be approved by the local
or other facilities qualified to
safety office.
appropriate safety procedures.
(2) It is imperative that crewstations be
d. Maximum effectiveness of lighting and
well ventilated during all painting operations, and
chemical/biological resistance is achieved when
proper respiratory equipment be used.
as much of the aircraft crewstation is coated as
possible. It is particularly important that surfaces
(3) Extreme care must be exercised to
which are touched or handled be properly main-
prevent any paint or solvents from coming in con-
tained in this paint system.
tact with restraint belts or the belts may be dam-
aged and require replacement due to loss of
6-20. EPOXY PAINT, MIL-G22750, FOR
tensile strength.
INTERIOR SURFACES OTHER THAN
CREWSTATIONS.
(4) There are four possible methods of
applying MIL-C-46168 paint to crewstation areas.
a. This is a plural component paint which has
chemical agent resistance equal to MIL-C-46168
(a) Apply paint with spray equip-
paints. It is formulated for interior surfaces which are
ment, after appropriate masking, during
not continuously exposed to sunlight.
manufacturing and production or aircraft overhaul
only.
b. MIL-C-22750 paint is applied in two coats. Apply
a mist coat and air dry for 15 minutes. The second coat
(b) Use of paint brushes or rollers at
should be applied until the total dry film thickness is 1.7
field level applications and maintenance.
to 2.3 mils. The total thickness of the topcoat should
not exceed 2.3 roils.
I
(c) Dismantle assemblies, spray the
c. MIL-C-22750 may be used to refinish internally
parts in an appropriate facility and reassemble, as
installed components, see paragraph 5-1.
requ i red.
I
d. This paint maybe used in cargo/troop compart-
(d) Combinations of the above.
ments or uninhabited areas in lieu of MIL-C-46168. It
should be painted in either gray or black.
(5) The choice of the proper method
depends on the model of aircraft, the facilities
and trained manpower available at the location to
6-21 MIL-C-46168, POLYURETHANE, lN-
do the painting, the quantity of aircraft to be
TERIOR AIRCRAFT GRAY, No. 36231.
painted. condition of the existing coatings, and
the specific areas to be painted. Any method or
This is a plural component polyurethane coating
combination of methods may be used with adher-
paint, intended for use over epoxy polyamide
ence to proper safety procedures.
primer, MIL-P-23377, or MIL-P-85582.
b. Evaluate the existing coating to deter-
PROCEDURES.
mine if the aircraft crewstation is in a condi-
tion to receive the MIL-C-46168 coating, or if
a. These procedures will be implemented by
the existing coating must be stripped. If ex-
maintenance personnel who have the proper train-
isting coatings are not acceptable, process in
ing and equipment to apply epoxy primers and
accordance with Chapter 2, Surface Prepara-
plural component polyurethane paints.
tion.
(1) It is essential that all painting and
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