Text in force at CAR3R-8: from CAR3R-0, effective 15 May 1956. OCR text
The hulls of boat seaplanes and amphibjans. shall be divided into watertight compartments in accordance with the following requirements:
(a) In airplanes of 5,000 pounds or more maximum weight, the compartments shall be so arranged that, with any two adjacent compartments flooded, the hull and auxiliary floats (and tires, if used) will retain sufficient buoyancy to support the maximum weight of the airplane in fresh water.
(b) In airplanes of 1,500 to 5,000 pounds maximum weight, the compartments shall be so arranged that, with any one compartment flooded, the hull and auxiliary floats (and tires, if used) will retain sufficient buoyancy to support the maximum weight of the airplane in fresh water.
(c) In airplanes of less than 1,500 pounds maximum weight, watertight subdivision of the hull is not required.
(d) Bulkheads may have watertight doors for the purpose of communication between compartments.