When is it permissible to splice coaxial cables?

Coaxial cables are critical components in various aircraft systems, especially in communications and data transmission. Proper handling and installation of these cables are essential to maintain signal integrity and system performance.

Splicing coaxial cables is generally not the preferred method due to the potential for signal degradation and introduction of interference. However, it is permissible to splice coaxial cables primarily in emergency situations. This allowance is based on the principle that, in urgent circumstances where immediate repair or replacement of a cable may not be feasible, splicing provides a temporary solution to restore system functionality. This can help ensure that critical systems remain operational when time and availability are constrained.

Under normal conditions, such as during routine maintenance checks or planned upgrades, the best practice is to replace damaged cables rather than splice them. These situations allow for proper procedures to be followed, minimizing potential issues associated with splicing, such as poor connections or additional signal loss. Similarly, splicing is not typically used as a response to a loss of signal unless it is in an emergency context, as addressing the root cause of the signal loss would be the focus.

Therefore, the practice of splicing coaxial cables is restricted and should only be employed in urgent scenarios, making it an acceptable method when immediate action is required