When an extra arm swing occurs upon landing, what is the maximum deduction?

When an extra arm swing occurs upon landing, the maximum deduction is 0.10. This deduction is in line with the gymnastics scoring guidelines, which stipulate that a minor balance check, such as a small additional arm movement, indicates a lack of control without being excessive in nature. A single extra arm swing typically signals a moderate error rather than a significant loss of balance or control, thus the deduction remains limited to that amount. It reflects the emphasis on maintaining a clean and controlled landing while allowing for minor imperfections.