TM55-1500-345-23
c. Aircraft crewstations painted with MIL-L-
NOTE
46159 or MIL-C-46168 interior aircraft black are
As the drying time of epoxy primer
rough textured and are not acceptable surfaces.
These surfaces must be stripped to the primer
i n c r e a s e s beyond two hours, the
adhesion of the top coat may decrease
surface and reprocessed when a complete
considerably. Care must be exercised to
repainting IS performed. (For touch up of areas
observe the maximum primer drying
previously painted with MIL-L-46159, see 4-13.)
time. When the time limit is exceeded, a
Where primer is worn through to the metal
substrate, such areas must be treated as metal
mist coat of primer must be applied to
substrate areas and processed in accordance
the surface prior to topcoating.
with provisions herein for such areas.
APPLICATION.
d. Cabin areas of some UH-60A aircraft have a
topcoat of TT-L-20, Gray No. 36231, that should be
a. The amount of MIL-C-46168, Aircraft Black,
maintained and touched up as required with the
No. 37038 paint will be mixed which will be used
TT-L-20 (camouflage lacquer) until these aircraft
during the subsequent 6-8 hours. The thoroughly
are converted to an interior topcoat of MIL-C-
mixed components A and B will be allowed to set
46168.
for a period of 30 minutes for aeration. This aera-
tion period is not necessary if spray equipment is
e. Mask all cabin areas that may be damaged
to be used.
by paint, paint vapors and cleaning solvents. See
This is particularly important for acrylic surfaces
such as canopies and panels.
Spray equipment will be used only in
crewstations and similar confined areas
f. Primers required. A c c e p t a b l e s u r f a c e s
when proper ventilation and protective
require only a flash coat of epoxy primer to in-
equipment is used.
adhesion of MIL-C-46168
sure maximum
The
flash
primer
coat
may
be
paint.
b. Subsequent to the aeration period the paint
eliminated if the area to be painted is extreme-
will be stirred frequently to assure suspension of
ly small and the surfaces are acceptable ac-
solid particles and uniform surface application.
cording to paragraph 4-12 and are ap-
cleaned prior to topcoating.
c. The mixture will be thinned in accordance
propriately
with Chapter 4. The exact thinning ratio and vis-
Primers may b e a p p l i e d w i t h b r u s h e s o r
rollers,
cosity will be determined by the user and the
application method.
(1) Apply a full primer coat on all areas
where there is expected heavy abrasion wear
6-24. APPLICATION
WITH
SPRAY
(cabin decks, pedals, foot rests, etc.)
EQUIPMENT.
a. Assure facility and equipment adequacy.
(2) It is necessary to reprocess all bare
metal areas.
(3) Using the basic application proce-
dure described in Chapter 3, apply
MIL-P-23377 or MIL-P-85582 Primers. Apply
0.6 to 0.9 mil to surfaces to be overcoated.
Allow the primer to dry one to two hours.
U n d e r s o m e e n v i r o n m e n t a l conditions,
shorter drying times may be allowable and
preferred.
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