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5217-00-3 – Dukes OEM High-Pressure Electric Fuel Boost Pump for Cirrus Aircraft
Available now on the Airparts.aero Marketplace.
Overview
The Dukes 5217-00-3 is the flight-critical, OEM high-pressure electric fuel boost pump assembly for the fuel-injected Continental IO-550-N and TSIO-550-K engines that power the Cirrus SR22 and SR22T aircraft. This is not merely a backup pump; it is an essential, multi-function component of the aircraft's fuel system, required for all phases of flight. Manufactured by Dukes, Inc. (a division of Collins Aerospace), this pump is engineered for absolute reliability, providing the fuel flow and pressure margins that are critical to the safety and performance of a high-performance, fuel-injected engine.
This is a positive displacement, rotary vane pump coupled to a sealed, explosion-proof 28 VDC electric motor. Its three primary functions are: 1) Priming: to pressurize the fuel system for engine start; 2) Vapor Suppression: to run continuously in flight, providing a positive pressure head to the engine-driven pump, which completely eliminates the risk of vapor lock; and 3) Redundancy: to provide the full, independent fuel flow required to power the engine in the event of a primary, engine-driven pump failure. The integrity of this component is directly linked to the uninterrupted operation of the engine.
Key Features
Genuine OEM Part: A factory-new, genuine Dukes/Collins Aerospace pump, as specified and certified by Cirrus Aircraft, guaranteeing fit, performance, and airworthiness.
Provides Critical Redundancy: Serves as the essential backup fuel pump, capable of sustaining full engine power in the event the primary engine-driven pump fails.
Vapor Lock Prevention: Engineered for continuous operation to provide a constant positive pressure in the fuel lines, raising the fuel's vaporization point and preventing engine failure from fuel starvation.
Rotary Vane Technology: Utilizes a highly reliable and efficient positive displacement rotary vane mechanism to provide a smooth, consistent fuel flow and pressure.
Explosion-Proof DC Motor: The integrated electric motor is fully sealed and certified as explosion-proof, a critical safety requirement for a component operating in a fuel-vapor-rich environment.
Integrated Check & Relief Valves: Includes internal check valves to prevent reverse flow and a relief valve to protect the system from over-pressurization.
Technical Specifications
Part Number: 5217-00-3
Component Type: High-Pressure Electric Fuel Boost Pump
OEM Manufacturer: Dukes, Inc. (Collins Aerospace)
Voltage Rating: 28 VDC
Pump Design: Positive Displacement, Rotary Vane
Motor Design: Sealed, Explosion-Proof DC Motor
Governing Specifications: Manufactured to Dukes' proprietary specifications as certified by Cirrus Aircraft and the FAA under the aircraft's Type Certificate.
Aircraft Compatibility
Cirrus: SR22, SR22T (equipped with Continental IO-550-N and TSIO-550-K engines).
Note: This is a flight-critical engine component. The specific aircraft Illustrated Parts Catalog (IPC) for a given serial number is the final and absolute authority for determining part applicability.
Applications
Primary Engine Start Priming: Provides initial fuel pressure to the fuel manifold for starting.
Continuous Vapor Suppression: Runs during all normal operations to ensure a solid, vapor-free supply of fuel is delivered to the engine-driven pump.
Emergency/Backup Fuel Supply: Provides full fuel flow to the engine in the event of a primary pump failure, as selected by the pilot.
Why Choose 5217-00-3?
For a fuel-injected engine, fuel pressure is life. The 5217-00-3 is the heart of the fuel delivery system's safety and redundancy architecture. A failure of this pump can lead to engine hesitation or complete failure, particularly on hot days or at high altitudes due to vapor lock. A failure in its backup capacity would leave no redundancy in the event of a primary pump failure. Using a non-certified or improperly overhauled pump is an extreme risk. Only the genuine OEM pump is guaranteed to have the correct, certified flow rates, pressure outputs, and explosion-proof construction required for the Cirrus fuel system. For any flight-critical component, especially one that provides the lifeblood to the engine, there is no substitute for the proven safety and reliability of the OEM part.
The most critical engineering principle addressed by the continuous operation of the 5217-00-3 pump is the maintenance of Net Positive Suction Head (NPSH) for the primary engine-driven pump, which is the key to preventing vapor lock. The engine-driven pump is a suction pump, creating a low-pressure zone at its inlet. This pressure drop, combined with heat from the engine, can lower the fuel's boiling point to below its ambient temperature, causing it to vaporize in the fuel line. The Dukes 5217-00-3, acting as a "pusher" pump located upstream, pressurizes the entire fuel line. This positive pressure is the "Net Positive Suction Head Available" (NPSHA) at the inlet of the engine-driven pump. By engineering the system so that the NPSHA is always significantly higher than the fuel's vapor pressure at any given temperature, the fuel is maintained in a liquid state, guaranteeing a solid, uninterrupted flow to the fuel injectors and ensuring reliable engine operation under all conditions.
Note: The 5217-00-3 is a flight-critical engine and fuel system component, and may be a life-limited part. Installation must be performed by a certified A&P/IA mechanic in strict accordance with the Cirrus Aircraft maintenance manual. The procedure requires careful handling of fuel, proper sealing of all line fittings, and a thorough post-installation leak check and operational test of the fuel system in all pump configurations.
Documentation
No public-facing OEM component maintenance manual was located for this specific part number. All authoritative technical data, installation procedures, and service life limits are contained within the proprietary Cirrus Aircraft Maintenance Manual (AMM) and Illustrated Parts Catalog (IPC) for the SR22/SR22T models.
*** CORE DEPOSIT OF $400.00 ***
