What is the required quality for fabric used in re-covering an aircraft?

The quality requirement for fabric used in re-covering an aircraft is that it should be similar to the original manufacturer material. This is crucial for maintaining the structural integrity and safety of the aircraft, as aircraft fabrics must meet specific performance standards set by regulatory bodies. The use of material similar to that originally specified ensures that characteristics such as weight, strength, flexibility, and durability are preserved, which are essential for the fabric's ability to withstand the environmental stresses encountered in flight.

Using any available fabric or low-cost textile material would not ensure compliance with safety regulations and could compromise the aircraft's performance and safety. Standard commercial grade material might not possess the same qualities as the original fabric, which can also lead to similar issues. Therefore, adhering to the specification of using fabric that closely matches the original manufacturer material is critical for airworthiness.