CHOP

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A form of turbulence.

  1. Light Chop – Turbulence that causes slight, rapid and somewhat rhythmic bumpiness without appreciable changes in altitude or attitude.
  2. Moderate Chop – Turbulence similar to Light Chop but of greater intensity. It causes rapid bumps or jolts without appreciable changes in aircraft altitude or attitude.

Source FAA Pilot/Controller Glossary · checked 2026-08-25

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