Chapter 4 - Preventative Measures and Deicing Procedures

Ropes

18.  Ropes are another method of removing contamination (usually light frost) from wings and horizontal tailplanes. The method requires two personnel and a seesaw motion back and forth across the surface to remove the contaminants. This method tends to polish thicker layers of frost and under such conditions, is not considered an acceptable method of preparing an aircraft for flight. This method would leave frost contamination on the critical surfaces prior to take off, which would not comply with CAR 602.11 or GOFR 622.11, and therefore, would not fulfill the "clean wing concept".