Pressurized compartment loads.

CFR · 2024-01-01 · US · Title 14

For airplanes with one or more pressurized compartments the following apply: (a) The airplane structure must be strong enough to withstand the flight loads combined with pressure differential loads from zero up to the maximum relief valve setting. (b) The external pressure distribution in flight, and stress concentrations and fatigue effects must be accounted for. (c) If landings may be made with the compartment pressurized, landing loads must be combined with pressure differential loads from zero up to the maximum allowed during landing. (d) The airplane structure must be designed to be able to withstand the pressure differential loads corresponding to the maximum relief valve setting multiplied by a factor of 1.33 for airplanes to be approved for operation to 45,000 feet or by a factor of (e) Any structure, component or part, inside or outside a pressurized compartment, the failure of which could interfere with continued safe flight and landing, must be designed to withstand the effects of a sudden release of pressure through an opening in any compartment at any operating altitude resulting from each of the following conditions: (1) The penetration of the compartment by a portion of an engine following an engine disintegration; (2) Any opening in any pressurized compartment up to the size H (3) The maximum opening caused by airplane or equipment failures not shown to be extremely improbable. (f) In complying with paragraph (e) of this section, the fail-safe features of the

official document · source cfr-2024 · id 14:§ 25.365