MIL-DTL-44285A
3.1 First article. When specified (see 6.2), a sample shall be subjected to first article
inspection (see 4.2 and 6.2).
3.2 Materials and components. The materials and components shall be as specified herein
and as shown on the applicable drawings. Materials and components not definitely specified shall
be of the quality normally used by the manufacturer provided the completed item complies with all
the provisions of this document.
*3.3 Color. The color of the Class A double bump through doors shall conform to Army
Green Shade 383. The color of the Class B double bump through doors shall conform to Shade
Sand 33303 of FED-STD-595 (see 1.2).
3.4 Alternate components. Components offered as equivalent to components specified in
this document and on the reference drawings as a specific manufacturer's part number or equal
shall be functionally equal to the manufacturer's part number identified and of equal or better
quality. The incorporation and inclusion of such a component in the design of the specified end
product shall not require modification or change to any other specified component, and shall not
reduce ease of maintenance to it or any other components, unless such modification or change is
specifically approved by the contracting officer. Prior to manufacture of the first article or if none
is required, prior to commencing production, the contractor shall submit for the contracting
officer's approval, a list identifying each proposed alternate component, together with proof that
each listed component complies with requirements specified herein. At the option of the
contracting officer, a physical sample of the proposed substitution may be required. Approval of
the submitted listing, together with necessary supporting data authorizes the commencement of
the first article or production manufacture, as applicable and does not relieve the contractor of the
responsibility that these components perform in accordance with specified requirements when
incorporated into the end product.
3.5 Design and construction. The design and construction of the bump through doors
shall be as specified herein and as shown on the drawings referenced in 2.1.2.
3.5.1 Honeycomb door panels. The inner and outer skins on all joints of each door panel
shall be sealed to provide a water barrier against the entrance of moisture to the core material.
The water barrier shall be maintained intact at all panel cross-sectional openings. All joints, edges
and mitered corners shall be assembled and sealed in a manner to prevent collection and retention
of moisture. The door panels shall be fabricated in accordance with the following requirements:
a. All aluminum surfaces shall be immersion coated in accordance with class 1A of
MIL-C-5541. Areas of touchup may be sprayed.
b. Apply adhesive specified in MIL-A-81236 in a quantity of 1 gallon per 200
square feet of surface area to be bonded.
c. Cover epoxy surfaces with scrim cloth as specified on Drawing 5-4-4123.
d. Insert reinforcing blocks as shown on drawing 5-4-4123.
e. Position honeycomb core material between aluminum skins and apply a
constant pressure of 10 to 12 psi over the entire surface area for a minimum of 24 hours at a
minimum temperature of 70oF.
f. Trim excess honeycomb and insert aluminum extrusions as shown on Drawings
5-4-4101 and 5-4-4102.
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