What is a disadvantage of using aromatic aviation fuels?

The chosen answer highlights a significant drawback of using aromatic aviation fuels, specifically their tendency to deteriorate rubber components within fuel systems. Aromatic hydrocarbons, which are present in these fuels, can have a solvent effect on rubber, leading to swelling, hardening, or even degradation of rubber seals, hoses, and gaskets. This deterioration can compromise the integrity of fuel systems, potentially leading to leaks or failures that can affect the safety and reliability of the aircraft.

The issues posed by aromatic fuels are especially critical in aviation, where maintaining system integrity is paramount. The impact on rubber must be carefully considered, as it can lead to increased maintenance costs and necessitate the use of specialized materials that can withstand contact with such fuels.

Understanding the physical and chemical interactions between aromatic fuels and various materials is essential for engineers and maintenance personnel when designing and maintaining aircraft fuel systems. This ensures that the selected fuels do not negatively affect the longevity and performance of these critical components.