Aircraft systems and instrumentsQuestion 594 of 934

What is the chief disadvantage of the float-type carburetor?

  1. Its icing tendency
  2. Its high cost to buy
  3. Its heavy weight on the engine
  4. Its high oil consumption
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Correct answer: Its icing tendency

The float-type carburetor discharges fuel at a point of low pressure, so ice readily forms in the venturi and on the throttle valve.

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 7: Aircraft Systems — Induction Systems — Carburetor Systems, page 168

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Questions last reviewed: 18 October 2026