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With carburetor ice present, what happens to RPM when full carburetor heat is applied?

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  1. RPM rises right away and stays up
  2. RPM drops, then gradually rises as ice melts
  3. RPM stays exactly the same

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References

  1. FAA Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 7 www.faa.gov/regulations_policies/handbooks_manuals/aviation/faa-h-8083-25c.pdf Checked 2026-10-07.

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FlyingWith a fixed-pitch propeller, what is usually the first sign of carburetor ice?FlyingPer the FAA, carburetor icing can occur at outside air temperatures as high as about what?FlyingWhat does the governor change to hold selected RPM on a constant-speed propeller?

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