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The engine runs rough with partial power loss. Which is an appropriate troubleshooting step while planning for a landing?

Choices

  • ✓ Apply carburetor heat for suspected carburetor icecorrect

    Carb heat clears carburetor ice, a common cause of rough running.

  • Shut off the fuel selector entirely

    Cutting all fuel would stop the engine completely.

  • Ignore it since some power remains

    Partial power loss is a serious warning that must be addressed.

  • Feather the propeller

    A typical training airplane has a fixed-pitch propeller that cannot be feathered.

Why

Rough running or partial power loss is troubleshot methodically — carb heat for ice, mixture and throttle adjustments, magneto checks, and switching tanks — while continuously planning for a forced landing.

FAA source: PHAK / partial power loss and rough runningbrowse the reference library →

This is taught in Abnormal Systems: Partial Power and Pitot-Static Failures — study the lessons free, then practice with grading and mastery tracking.

Original study question written for this course — representative of FAA knowledge-test topics, not an actual current FAA exam question.

The engine runs rough with partial power loss. Which is an appropriat… · PPL Free Ground School