What is the purpose of a fairlead in aircraft systems?

The purpose of a fairlead in aircraft systems is fundamentally to prevent a cable from rubbing on the aircraft structure. A fairlead provides a controlled pathway for cables as they navigate around structural components or changes in direction. This is crucial because wear and abrasion from friction can lead to cable damage, potential failure, and increased maintenance costs. By using a fairlead, the routing of cables can be managed effectively, thus protecting them from contact with sharp edges or other surfaces that could cause issues during operation.

Understanding the importance of preventing wear on cables helps illuminate the critical role fairleads play in ensuring the longevity and reliability of the control systems in an aircraft.