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PA.II.E.R2FAA-S-ACS-6C · Nov 2023Risk management

Porpoising and skipping.

ACS element text (the applicant demonstrates understanding of)

Porpoising and skipping.

Bottom line

If porpoising occurs due to a nose-low planing attitude, stop it by applying timely back pressure on the elevator control to prevent the bows of the floats from digging into the water. To correct for skipping, first increase back pressure on the elevator control and add sufficient power to prevent the floats from contacting the water.

FAA references

  1. SEA ch. 4 (p. 4-10) — FAA-H-8083-23
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