What is the function of safety wire on aircraft components?

The function of safety wire on aircraft components is to prevent fasteners from loosening due to vibration. In aviation, the integrity of fasteners is critical to ensuring that components remain securely attached during flight, as vibrations can cause fasteners to loosen over time. Safety wire provides a method of securing bolts, nuts, and other fasteners in place, effectively creating a mechanical restraint that discourages them from rotating and loosening.

By threading a wire through fastener heads and securing them together, it creates a locking mechanism that is resistant to the forces exerted during operation. This is particularly important in aircraft, where even minor failures can lead to serious safety issues. Therefore, the use of safety wire is a key practice in maintenance and assembly processes to ensure the reliability and safety of the aircraft system.