What identification marking is found on the selvage edge of fabric-covered aircraft?

The identification marking that is found on the selvage edge of fabric-covered aircraft is typically the FAA-PMA stamp. This stamp indicates that the fabric has a Parts Manufacturer Approval (PMA) from the FAA, which means it meets specific quality and safety standards required for aircraft components. Such certification ensures that the material used in the construction of the aircraft’s fabric covering is reliable and complies with regulatory requirements.

In the context of aircraft maintenance and safety, verifying the presence of a PMA stamp on the fabric is crucial, as it assures aircraft owners and maintenance personnel that the materials used have been scrutinized and approved for aviation use. This contributes to the overall airworthiness of the aircraft, as any fabric used must be suitable for the demanding environment that aircraft face during operation.

Other potential markings or documents, such as manufacturer's logos, airworthiness certificates, or regulatory compliance stamps, serve different purposes or are located in different areas, and while they are important, they are not specifically associated with the identification marking found on the selvage edge of the fabric. The PMA stamp is distinct in that it directly relates to the certification of the fabric itself, making it the correct answer to the question.