Which cleaning technique is specifically mentioned for its effectiveness in tight spaces?

Ultrasonic cleaning is recognized for its effectiveness in tight spaces due to its unique mechanism of action. This cleaning technique utilizes high-frequency sound waves to create microscopic bubbles in a solution. When these bubbles collapse, they generate high-energy shock waves that can penetrate into small crevices and intricate geometries where traditional cleaning methods may struggle.

This is especially beneficial in avionics, where components often have complex shapes and delicate features that require thorough cleaning without the risk of damage. The gentle yet effective nature of ultrasonic cleaning allows it to reach contaminants lodged in tight spaces, ensuring thorough removal of dirt, grease, dust, and corrosion without harming the sensitive electronic components.

In contrast, manual scrubbing, pressure washing, and sanding can be limited in effectiveness when dealing with confined areas due to their reliance on direct contact and larger cleaning tools, which may not fit or be able to adequately clean those spaces. Thus, ultrasonic cleaning stands out as the optimal choice for achieving effective cleaning in hard-to-reach areas.