FAA AMT (Aviation Maintenance Technician) Airframe Practice Exam

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What is one disadvantage of using aromatic aviation fuels?

  1. Increases fuel consumption

  2. Reduces engine power

  3. Increases fuel efficiency

  4. Deteriorates rubber parts

The correct answer is: Deteriorates rubber parts

Aromatic aviation fuels have a higher aromatic content, which can lead to the deterioration of rubber parts in the fuel system. Rubber components such as seals, gaskets, and hoses can be adversely affected by aromatic fuels, causing them to degrade over time. This can result in leaks, system malfunctions, and potential safety hazards. Therefore, the degradation of rubber parts is a significant disadvantage of using aromatic aviation fuels, making option D the correct answer. Options A, B, and C are incorrect as they do not accurately describe disadvantages of using aromatic aviation fuels. Aromatic fuels do not necessarily increase fuel consumption or reduce engine power. While aromatic fuels may have different combustion characteristics compared to other types of fuels, they do not directly impact fuel efficiency in a negative way.

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