n/a
(a) If certification for intended operations on water is requested, the aircraft must:
(1) provide buoyancy of 80 % in excess of the buoyancy required to support the maximum weight of the aircraft in fresh water; and
(2) have sufficient margin so that the aircraft will stay afloat at rest in calm water without capsizing in case of a likely float or hull flooding.
(b) If certification for emergency flotation is requested, the aircraft must:
(1) not rely on any manual action to deploy any installed emergency flotation system;
(2) have watertight compartments, integrated buoyancy or flotation units of the emergency flotation system and their attachments to the aircraft, capable of withstanding the applicable water loads; and
(3) be shown to maintain its intended floating attitude in the sea conditions selected by the applicant; and
(4) be shown not to sink for 15 minutes.
(c) If certification for ditching is requested, the aircraft must:
(1) not rely on any manual action to deploy any installed emergency flotation system;
(2) withstand the applicable water loads;
(3) be shown to have a safe water entry and to maintain its intended floating attitude in the sea conditions selected by the applicant;
(4) be shown not to sink for 15 minutes; and
(5) for Category Enhanced incorporate appropriate post-capsize survivability features.
(d) If certification for limited overwater operations is requested, the aircraft must:
(1) not rely on any manual action to deploy any installed emergency flotation system;
(2) have watertight compartments, integrated buoyancy or flotation units of the emergency flotation system, and their attachments to the aircraft, capable of withstanding the applicable water loads; and
(3) be shown not to sink for 15 minutes.
(e) If certification for operations on floating surfaces is requested, the aircraft must be shown to be able to be safely operated within the surface motion limits selected by the applicant, in addition to meeting the criteria referred to in points (b), (c) or (d).
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