Electrical tape should be used in aircraft wiring in which scenario?

• A. Only on splices
• B. Only on insulation repairs
• C. Nowhere
• D. For color coding

Answer: (C)

In aircraft wiring, you must use approved insulation and protection methods rather than household electrical tape. Vinyl tape’s adhesive can break down with fuel, oil, solvents, and extreme temperatures, and it can peel, trap moisture, or allow movement that wears away insulation. It also doesn’t guarantee long-term dielectric strength or reliable color coding in the harsh aviation environment. For any legitimate repair or insulation task, use approved materials such as heat‑shrink tubing, protective sleeving, and properly rated connectors. Therefore, electrical tape is not used for wiring insulation in certified aircraft, i.e., it’s not employed in normal scenarios.