Technical data

These solvents should not be used on polycarbon-
ates or acrylics. These solvents will cause most
rubber products to swell; however, the rubber will
return to its original shape when the solvent
evaporates.
NOTE
Low vapor pressure NESHAP compliant solvents
are slow to evaporate and must be wiped dry
before paint application. These are the preferred
solvents.
3.1.4.1 Solvent-Wipe, Aircraft Prepaint for Environmental
Compliance. Environmental requirements have placed re-
strictions on use of some solvents. When using any solvents
that are being restricted by environmental regulations, mini-
mize consumption by using only a small amount of solvent on
a wiping cloth; do not saturate the cloth. Wipe the surface
being cleaned and then wipe with a dry wiping cloth. When
the cloth becomes soiled, dispose of it in a closed container.
This operation must be accomplished when the surface to be
painted has become contaminated and always just prior to
application of primers or subsequent topcoats. Always check
with the local base Environmental authorities for restrictions
and full compliance requirements. Table 3-2 lists approved
alternative solvents that will meet many environmental regu-
latory requirements.
3.1.5 Surface Preparation For MIL-C-27725/SAE
AMS-C-27725 Integral Fuel Cell Coating.
• A-A-59281 is flammable and toxic to eyes,
skin, and respiratory tract. Eye and skin pro-
tection required. Good general ventilation is
normally adequate.
• MIL-C-81706/MIL-DTL-81706 is toxic to
eyes, skin, and respiratory tract. Eye and skin
protection required. Consult Bioenvironmen-
tal Engineering Services to determine need for
respiratory and ventilation requirements.
The integrity of fuel tank coatings is critical to all aircraft,
and surface preparation requirements are specific and not to
be wavered from. Clean surfaces to be coated with MIL-C-
27725/SAE AMS-C-27725 using only A-A-59281, Type I
Cleaning compound. A-A-59281, Type I is a solvent blend
designed for this application. Apply A-A-59281, Type I to a
lint-free cleaning cloth. Wipe Dry. Do not allow the solvent to
evaporate. Change cleaning cloths regularly as required to
ensure soils are not spread or transferred. Immediately follow
the solvent wipe with application of conversion coating
conforming to Specification MIL-C-81706/MIL-DTL-81706
per Paragraph 3.1.19.
Table 3-2. Wipe Solvents
Solvent Selection
Metals
Organic Coatings FL 6
Coated Solvent Resistant Finishes FL 6
Composite Materials
Reactivation of Painted Surface
Regulated By NESHAP FL 1
Meets Requirements of NESHAP FL 2
NESHAP Exempt FL 3
Surface to be Cleaned Compliance
Alcohols
Ethyl alcohol, denatured FL 4 GGGG X
Isopropyl alcohol FL 4 GF GF G G X
Napthas/Petroleum Distillates
P-D-680, Type II, III, Dry Cleaning Sol. G G G X FL 5
TT-N-95, Aliphatic Naptha GGGG XFL5
TO 1-1-8
3-5