FAA AMT (Aviation Maintenance Technician) Airframe Practice Exam

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What causes chatter in a hydraulic system?

  1. Use of incompatible hydraulic fluid

  2. Air in the system

  3. Worn out hydraulic hoses

  4. Faulty pressure gauges

The correct answer is: Air in the system

Chatter in a hydraulic system is typically caused by air bubbles or air pockets in the system. When air is present, it can cause erratic operation and produce vibrations known as chatter. In contrast, options A, C, and D are not directly linked to the issue of chatter in a hydraulic system. Incompatible hydraulic fluid can lead to other issues such as fluid breakdown or component damage, worn-out hydraulic hoses can result in leaks or loss of pressure, and faulty pressure gauges can lead to inaccurate pressure readings but do not directly cause chatter.

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