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3 Answers

Auxiliary boost pump

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Aircraft Systems, Commercial Pilot, Flight Instructor, General Aviation, Private Pilot, Student Pilot

Why is the auxiliary boost pump used in takeoffs and landings in some aircraft?

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3 Answers



  1. John D Collins on Dec 11, 2014

    It provides a safety backup for the engine driven pump. Some boost pumps in combination with the engine driven pump will cause the engine to run too rich to keep them on. Follow the guidance in your POH.

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  2. Gary S. on Dec 12, 2014

    Used also for cold engine start but turn off quickly or engine may flood or spill fuel under engine on ramp, causing a fire hazard.

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  3. psequeira on Dec 16, 2014

    Thank you Gary and John

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