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If the airplane's electrical system fails, what happens to the magneto ignition?

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  1. It keeps working, since magnetos make their own current
  2. The engine quits immediately
  3. Only one spark plug per cylinder fires

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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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