该测试方法用于确定由于仅在辐射热或同时施加火焰的影响下由于热分解而导致的电线/电缆绝缘材料产生的烟雾的特定光密度。 它用于评估航空航天车辆内部使用的电线/电缆的绝缘材料，但可用于适用采购文件中规定的其他应用。 该标准应用于测量和描述在受控实验室条件下响应热和火焰的产品的性质，不应用于描述或评估在实际火灾条件下的材料，产品或组件的火灾危险或火灾风险。然而，该测试的结果可以用作火灾风险评估的要素，其考虑到与特定最终用途的火灾危险性的评估相关的所有因素

This test method is intended for determination of the specific optical density of smoke generated by electrical wire/cable insulation materials due to pyrolitic decomposition under the influence of radiant heat only or with simultaneous flame application. It is used for evaluation of insulation materials of electrical wire/cable used in the interiors of aerospace vehicles but may be utilized in other applications as specified in applicable procurement documents. This standard should be used to measure and describe the properties of products in response to heat and flame under controlled laboratory conditions and should not be used to describe or appraise the fire hazard or fire risk of materials, products, or assemblies under actual fire conditions. However results of this test may be used as elements of a fire risk assessment which takes into account all of the factors which are pertinent to an assessment of the fire hazard of a particular end use.