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|  MIL-S-85419 (AS)
3.4.1 Model Specification. A model specification in accordance
with 6.3 shall be prepared by the supplier and submitted to
NAVAIR (AIR-536) for approval.
3.5 Materials and Parts. The limitations and restrictions
placed on the use of materials and components by MIL-BULL-544
shall pertain. Materials, parts, and processes shall conform to
applicable Government specifications listed in MIL-BULL-544.
Contractor or industry specifications may be used for materials
or processes not listed in MIL-BULL-544, provided the
specifications are approved by the approving activity and contain
provisions for adequate tests.
3.5.1 Materials.
3.5.1.1 Toxic Products. Materials which are toxic in
themselves, or which become toxic when pulverized or vaporized,
or which have toxic products of combustion, shall be used only
upon written permission of the approving activity.
3.5.1.2 Non-Metals. Non-metallic materials used, including
plastics, fabrics, and protective finishes shall be
flame-resistant, shall not support combustion, shall be moisture
resistant, and shall not be adversely affected by weather,
temperature, and ambient conditions.
Materials that are nutrients for fungi shall not be used
where it is practical to avoid them. Where used, all nutrient
materials and associated fungicidal treatments used shall be
specified on the starter/APU manufacturing drawings.
Elastomeric components shall be fabricated from materials
covered by applicable specifications and shall have maximum
practicable ozone and aging resistance and hydrolytic stability
consistent with performance requirements. All elastomeric
materials used shall be subject to the specific acceptance by
approving activity based upon the demonstrated suitability of the
materials for the expected operating and storage environments.
Age controls for synthetic rubber parts shall be in accordance
with MIL-STD-1523.
Process specifications for adhesive-bonded construction
including reinforced plastic, sandwich, and foamed-in-place core
construction shall be prepared in accordance with MIL-P-9400.
All sandwich construction shall be sealed or otherwise designed
to preclude entrance or entrapment of water and other
Perforated metallic core shall not be used. When
contaminants.
metallic core is used, it shall be corrosion resistant.
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