Who determines the type of fabric used for fabric-covered aircraft?

The original manufacturer of the aircraft is responsible for determining the type of fabric used for fabric-covered aircraft. This decision is typically based on engineering specifications, safety standards, and performance requirements established during the design and manufacturing process. The manufacturer selects materials that provide the necessary strength, durability, and weight characteristics suitable for the aircraft's design and intended use.

Furthermore, while the FAA plays a crucial role in regulating and overseeing aviation safety, including materials and standards, they do not specify the types of fabric to be used on individual aircraft. Similarly, although pilots and aircraft owners have input regarding maintenance and operation, they do not have the authority or expertise to determine the fabric type used, as this is a specialized decision made at the manufacturing level to ensure compliance with safety and performance criteria.