§ 27.751 - Main float buoyancy.

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For main floats, the buoyancy necessary to support the maximum weight of the rotorcraft in fresh water must be exceeded by—

50 percent, for single floats; and

60 percent, for multiple floats.

Each main float must have enough water-tight compartments so that, with any single main float compartment flooded, the main floats will provide a margin of positive stability great enough to minimize the probability of capsizing.