Final answer:The cabin upholstery materials in standard category airplanes must meet specific fire-reta_rdant standards as stipulated by aviation governing bodies.Explanation:Cabin upholstery materials installed in current standard category airplanes must meet specificfire-reta_rdant standards. It is a requirement set forth by governing aviation bodies such as the Federal Aviation Administration (FAA) in the US.This is essential to increase the chances of survival and time for escape in case of any in-flight fire. It also helps to prevent the rapid spread of fires. Therefore, the materials used should be tested for flammability, smoke generation, and toxicity before being allowed for use in airplane cabins.Learn more about Fire-Reta_rdant Standards here:brainly.com/question/32221153#SPJ11...

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