Lacing is permitted anywhere in the aircraft?

• A. Yes
• B. No
• C. Only in Noncritical Areas
• D. Only in Service Panels

Answer: (B)

Securing wires must use approved methods that keep conductors protected, give clear access for inspection, and tolerate vibration and aging. Lacing uses a cord that can deteriorate with heat and vibration, trap moisture, and hide wear or damage to insulation. Because of these risks and the need for reliable inspection and maintenance, lacing isn’t an approved method anywhere on the aircraft. Modern practice uses clamps, ties, looms, or conduits that stay secure and are easy to inspect and replace if needed. So lacing is not permitted in any location.