When repairing damaged wiring, which parts should be used?

• A. Non-certified splices temporarily.
• B. Any available parts from inventory.
• C. Approved parts.
• D. Temporary field replacements only.

Answer: (C)

Using approved parts is essential for any wiring repair because they are specified and authorized for aviation use, ensuring the repair maintains airworthiness and meets safety and regulatory standards. Approved parts have known electrical characteristics, insulation, temperature ratings, and compatibility with connectors and harnesses, and they are traceable through proper documentation and source controls. This means the repair will perform as intended under the aircraft’s operating conditions and will be acceptable to inspectors and maintenance manuals.

Non-certified splices, or parts brought in from random inventory, may not meet the required standards and could introduce failures, faulty connections, or insulation problems. Temporary or field substitutions are not acceptable for permanent repairs because they do not guarantee long-term reliability or compliance with the approved specifications.