What is a common consequence of fuel contamination in aircraft?

Fuel contamination can lead to significant engine performance issues or failures because it introduces undesired substances into the fuel system, which can have various detrimental effects. Contaminated fuel may include water, dirt, microbial growth, or other foreign materials which can clog filters, cause corrosion, or disrupt the fuel-water separation process. These issues can lead to inadequate fuel supply to the engines, improper combustion, and ultimately result in poor performance or engine stoppages.

The impact on engine performance is critical, as aircraft engines rely on clean fuel for efficient operation. When contaminants are present, engines may experience rough running, reduced power, or even complete failure during operation. This makes proper fuel quality checks and maintenance essential for aviation safety and reliability.