MIL-DTL-52543E
3.10 Interchangeability. All parts having the same contractor's part number shall be
directly and completely interchangeable with each other with respect to installation and
performance.
3.11 Identification marking. The light shall be indentified in accordance with
MIL-STD-130.
3.12 Fungus and moisture resistance. The electrical circuitry, including all components
and connections, except as specified below, shall be protected from the effects of fungus growth
and moisture by an overall treatment with Simpson Coatings fungus-resistance varnish 101-004,
or equivalent:
a. Components or circuit elements that are inherently fungus-and-moisture resistant or
which are hermetically sealed need not be treated.
b. Components or circuit elements whose functions will be adversely affected by the
varnish coating shall not be treated.
When used, the varnish shall be applied by spray, brush, or a combination of both to give a dry-
film thickness of not less than 1 mil to component or element surfaces previously cleaned and
prepared so that the surfaces are free from all foreign matter which would interfere with the
adherence or function of the varnish.
3.12.1 Composition. All applications of varnish shall fully comply with
SCAQMD Rule 442.
3.13 Dimensions. The dimensions of the light, with 20 pounds (9 kg) of sand as ballast,
shall not exceed the following:
Length - 12.5 inches (31.75 cm)
Width - 12.5 inches (31.75 cm)
Height - 11.5 inches (29.21 cm)
3.14 Color. The color of the canister, ballast bag, thread, holddown lines, anchor pins,
and carrying bag shall be aviation yellow numbers 13538, 23538, or 33538 as specified in
FED-STD-595.
3.15 Workmanship. The light, including all parts and accessories shall be fabricated and
finished to ensure freedom from blemishes, defects, burns, and sharp edges; accuracy of
dimensions, radii of fillets, and marking of parts and assemblies; thoroughness of soldering,
welding, brazing, painting, wiring, and riveting; alignment of parts, and tightness of assembled
components.
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