When applying a fay seal to the ground stud assembly, is it correct to apply the sealant to only one side of each piece of hardware?

Applying a fay seal in aircraft assembly is a critical procedure, particularly when it comes to preventing leaks and ensuring structural integrity. When using a fay seal, it is crucial that the sealant is applied to both sides of each piece of hardware involved in the assembly, including the joint interface. This ensures a complete seal and effective bonding, which is essential to maintain the performance of the assembly under operating conditions.

The correct answer indicates a common misconception about the application process. By applying the sealant to only one side, you potentially leave the joint exposed to environmental factors, which can lead to moisture ingress, corrosion, and eventual failure of the seal. A proper fay seal application requires the consideration that both surfaces need to be treated to create a reliable barrier.

In summary, it is essential to apply sealant to both sides of each piece of hardware in a fay seal assembly to ensure the utmost protection and functionality.