MIL-P-8587 Plastic; Sheet, Colored, Instrument Flying Training

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MIL-P-85878

are suspected of being detrimental should be evaluated. Blemishes which do not individually reduce visibility through the l plastic shall be disregarded unless they are grouped in an objectionable pattern. Minor defects within 1 inch of the edge shall be disregarded. The total objectionable defects shall not exceed the quantity specified in 3.14.

4.7.7 Rate of burning. This test shall be conducted in accordance with the test for flammability of plastic exceeding 0.05 inch in thickness, ASTM 0635.

4.7.8 Specific gravity. The specific gravity of the material at 72.5° +2°F (22.5°C +1.1°C) with reference to distilled water at the same temperature shall be determined in accordance with ASTM 0792.

4.7.9 Index of refraction. The index of refraction shall be determined in accordance with ASTM 0542.

4.7.10 Water absorption. The percentage of water absorbed in 24 hours shall be determined in accordance with ASTM 0570.

4.7.11 Formability. The test specimen shall be least 7-1/2 inches (19 cm) long and at least 4 inches (10.2 cm) wide. The temperature of the test specimen shall be 75.5° +5°F (23.9°C +2.8°C) prior to and during the performance of this test. Two test specimens shall be placed over a 5-inch diameter (12.7 cm) semi-cylindrical mold covered with a soft lintless cloth. The 7-1/2 inch (19 cm) dimension shall be parallel to the circumference of the mold. A 1-1/2 pound (0.68 Kg) weight shall be so placed on the test specimen as to shape the specimen 180 degrees about the covered surface of the mold. A 1-1/2 pound (0.68 Kg) weight shall be so placed on the test specimen as to shape the specimen 180 degrees about

the covered surface of the mold. .The specimens shall not break, crack, or exhibit any condition that does not exist in the flat condition.

4.8 Workability. The procedures described shall be performed in accordance with the instructions, and the specimen examined for mechanical failure or the presence of significant defects not originally present.

5. PACKAGING

5.1 Protective wrapping., Unless otherwise specified by the procuring activity, all material shall be separated by size and thickness when paced for shipment. Individual sheets shall be covered on both sides by a suitably adhered paper or film that can be readily removed without injury to the surfaces and that will adequately protect the surfaces from scratching or damage during handling, shipping or storage.

5.2 Preservation and packing . Preservation and packing shall be level A, or C as specified (See 6.2).

5.2.1 Level A. Plastic shall be packaged method III in quantities as specified by the contract in accordance with MIL-P-116.

5.2.2 Level C. Plastic shall be packaged in accordance with the manufacturer's commercial practice.

5.3 Packing. Packing shall be level A, B, or C, as specified (see 6.2).

5.3.1 Level A. Plastic, packaged as specified in 5.2.1, shall be packed in overseas-type shipping containers conforming to type I, class 2 of PPP-B-636. Insofar as practicable, exterior containers shall be of uniform shape and size, of minimum cube and tare consistent with the protection required, and shall contain identical quantities. The gross weight of each pack shall not exceeded the weight limitations of the container. The container shall be closed and strapped in accordance tithe e applicable container specification or appendix thereto. Containers shall be provided with a case liner conforming to MIL-L-10547 and shall be sealed in accordance with appendix thereto.

5.3.2 Level 8. Plastic, packaged as specified in 5.2.1, shall be packed in domestic-type shipping containers conforming to type I, class 1 of PPP-B-636. Exterior containers shall be of minimum cube and tare consistent with the protection required., Insofar as practicable, exterior containers shall be of a consistent shape and size and shall contain identical quantities. Containers shall be closed and strapped in accordance with applicable container specification or appendix thereto.

5.3.3 Level C. Plastic shall be packed in containers that will insure acceptance by common carrier at the lowest rates and safe delivery at the first receiving destination. Shipping containers shall conform to the with Uniform Freight Classification Rules or other carrier regulations applicable to the mode of transportation.