United 6511 Fuel Flow Indicator

This part number designates a panel-mounted electric fuel flow indicator manufactured by Hickok Electrical Instrument Co. (Model 563-221) for Textron Beechcraft. It is a primary engine monitoring instrument factory-installed on high-performance general aviation aircraft.
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Description

This unit has been bench tested by an FAA certified repair station and it comes with an 8130 single release dated 06/03/2026.

Key Technical Capabilities
  • Electrical Signal Processing: Engineered to process continuous frequency or electrical inputs directly from an inline fuel flow transmitter/transducer, translating raw sensor feedback into precise, stable needle deflection.
  • Dedicated Space Optimization: Built inside a space-saving 2-inch cylindrical housing rather than a standard 3-inch profile. This compact footprint allows it to be tightly integrated into secondary engine gauge clusters without consuming valuable flight deck space.
  • Crucial Mixture Management: Provides clear resolution across a 3 to 30 GPH scale, allowing pilots to accurately monitor fuel burn, calculate cross-country endurance limits, and properly adjust the fuel-air mixture to match performance charts. 
  • Damped Mechanical Display: Employs an internal movement layout that dampens high-frequency engine harmonics and airframe vibrations, preventing needle jitter or pointer float during high-power climbs or cruise phases.

Additional information

Part Number

58-380118-7

Serial Number

1457

Alternate Part Number

66830-1146

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