Which statement is true about the FUEL 1 BYPASS caution being reported?

Which statement is true about the FUEL 1 BYPASS caution being reported?

• A. The #1 engine fuel line is blocked
• B. The #1 engine fuel filter is bypassed due to contamination
• C. The #2 engine fuel filter is bypassed
• D. The #1 engine fuel filter bypass is incorrect

Answer: (B)

FUEL 1 BYPASS means the bypass path in the engine 1 fuel filter has opened, allowing fuel to flow around the filter. This happens when the filter element is contaminated or clogged beyond limits, causing the differential pressure to trigger the bypass so the engine still gets fuel. So the statement that best fits is that the engine 1 fuel filter is bypassed due to contamination. It’s not about a blocked fuel line, it doesn’t refer to engine 2, and the notion of an “incorrect bypass” isn’t how this caution is phrased.

FUEL 1 BYPASS means the bypass path in the engine 1 fuel filter has opened, allowing fuel to flow around the filter. This happens when the filter element is contaminated or clogged beyond limits, causing the differential pressure to trigger the bypass so the engine still gets fuel. So the statement that best fits is that the engine 1 fuel filter is bypassed due to contamination. It’s not about a blocked fuel line, it doesn’t refer to engine 2, and the notion of an “incorrect bypass” isn’t how this caution is phrased.