MIL-DTL-22442-3 Cable Assembly, Aircraft Audio, Cable \(Retractile\)

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MIL-DTL-22442/3B(AS)

APPLICABLE DOCUMENTS:

MIL-I-3930

Insulating and Jacketing Compounds, Electrical (for Cables, Cords and

Wires), General Specification for

MIL-C-13273

Cord, Electrical (Retractile 2, 3, and 4 Conductor WD-9/U, WT-2/U

and WF-4/U

MIL-HDBK-454

Electronic Equipment, General Guidelines for

REQUIREMENTS:

1. All performance requirements and construction requirements except as modified by this

specification sheet shall be in accordance with MIL-C-13273.

* 2. Materials. All materials used in the construction of the cable assemblies should be

fungus-resistant as specified in Guideline 4 of MIL-HDBK-454.

3. Conductors. Each stranded conductor shall be equivalent to 404 circular mils (No. 24

AWG) and shall consist of 4l strands of No. 40 AWG tinned soft cadmium copper

alloy, having a l percent nominal content of cadmium. It shall be tight bunch stranded

with a lay not exceeding 0.75 inch. Prior to stranding, the elongation of individual strands shall

be not less than 10 percent and the tensile strength shall not be greater than 55,000 pounds per

square inch. After stranding, and prior to insulating, the elongation of individual strands shall not

be less than 5 percent and the tensile strength shall not be greater than 58,000 pounds per square

inch. Each conductor in the finished cord shall have a nominal DC resistance of 39.0 ohms per

1000 feet at or corrected to a temperature of 20�C.

4. Insulation. The insulation for the retractile cords shall be Type IR or Type IH rubber

compound conforming to the requirements of MIL-I-3930 and capable of meeting the

requirements specified herein.

5. Dimensions of insulated conductors. The diameter of each insulated wire stranded

conductors shall be not less than 0.057 inch nominal and shall not be greater than 0.063 inch. The

minimum wall thickness shall not be less than 0.009 inch.

6. Colors. The color of the insulation on the 4 conductors shall be black, white, red and

green.

* 7. Separators. The insulation on each conductor shall be free stripping. Separators shall

consist of a serving, knitted barrier, or a close braid of suitable material. The use of a separator is

optional.