Test on Aircraft Corrosion and Maintenance Practices

Question 1: Does the process of corrosion removal include neutralizing any residual material remaining in pits and crevices before restoring protective surface films?

A. Ano

B. Ne

Explanation: The steps for corrosion removal include cleaning and stripping the corroded area, removing as much corrosion as possible, neutralizing any residual material remaining in pits and crevices, and restoring protective surface films and paint.

Question 2: The use of hand wire brushing is an acceptable method for removing surface corrosion from titanium parts.

A. Ano

B. Ne

Explanation: Acceptable methods for removing surface corrosion from titanium and highly stressed metal parts include stainless steel wool or brush, aluminum oxide paper, scotch brite, abrasive blast with glass beads, and hand polish with aluminum polish and soft cotton cloth. Hand wire brushing is not listed as an approved method for titanium parts.

Question 3: According to the study materials, which of the following tools are approved for cleaning corroded anodized surfaces?

A. Fiber bristle brushes

B. Steel wool

C. Aluminum wire brushes

D. Small power buffers

Explanation: The study materials state that fiber bristle brushes, aluminum wool, and aluminum wire brushes are approved tools for cleaning corroded anodized surfaces. Steel wool and small power buffers are mentioned for removing rust from other aircraft materials, not specifically anodized surfaces.

Question 4: What is the preferred cleaning agent for plastic surfaces on an aircraft?

A. Toluol or toluene

B. Boric acid and water

C. Soap and water

D. Sodium bicarbonate of soda and water

Explanation: The study materials state that the preferred cleaning agent for plastic surfaces is soap and water.

Question 5: It is generally safe to pressure wash aircraft bearings and hinges without taking special precautions.

A. Ano

B. Ne

Explanation: When pressure washing an aircraft, areas such as bearings and hinges must be avoided or protected to prevent damage or contamination.