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Fuel boost pump

I have a 550 engine in my F33. Should I have a high/low speed boost pump? The aircraft has the original single speed pump.

Model: Bonanza F33A
Aircraft Serial Number: CE964
Posted 4/14/2021 - 4 weeks ago
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Check the STC paperwork that was used for the 550 installation. If it was the D'Shannon STC, I recall the two-speed pump was an option.

Mike
ABS Tech Advisor

Posted 4/14/2021 - 4 weeks ago
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The STC requires a 2 speed pump installation if the engine has an Altitude Compensating fuel pump installed.
If you have a standard fuel pump the original pump is approved.

Bob Ripley
ABS Technical Advisor

Posted 4/15/2021 - 4 weeks ago
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Thanks, I appreciate the help.

Posted 4/15/2021 - 4 weeks ago
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Fuel boost pump