Aviation Investigation Report A98H0003

2.3.2  Contamination Issues

Several Swissair MD-11s were inspected for potentially flammable contaminants in the area where the fire is believed to have started; little or no contamination was observed in this area. It was determined by testing that the materials involved in the initiation of the SR 111 fire were flammable in their newly installed condition; therefore, contamination was discounted as a factor in the initiation of the fire.

Although it is intuitive that the presence of contamination on the surface of a material could have a negative affect on its flammability characteristics, additional testing is required to quantify the risk.

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