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CA.I.I.K2FAA-S-ACS-7B · Nov 2023Knowledge

Float and hull construction, and its effect on seaplane performance.

ACS element text (the applicant demonstrates understanding of)

Float and hull construction, and its effect on seaplane performance.

Bottom line

Floats and hulls are carefully designed to optimize hydrodynamic and aerodynamic performance. A strong keel runs the length of the float along the center of the bottom. Besides supporting the seaplane on land, the keel serves the same purpose as the keel of a boat when the seaplane is in the water.

FAA references

  1. SEA ch. 2 (p. 2-2) — FAA-H-8083-23
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