Current through May 31, 2024
Section 23.2325 - Fire protection(a) The following materials must be self-extinguishing-(1) Insulation on electrical wire and electrical cable;(2) For levels 1, 2, and 3 airplanes, materials in the baggage and cargo compartments inaccessible in flight; and(3) For level 4 airplanes, materials in the cockpit, cabin, baggage, and cargo compartments.(b) The following materials must be flame resistant-(1) For levels 1, 2 and 3 airplanes, materials in each compartment accessible in flight; and(2) Any equipment associated with any electrical cable installation and that would overheat in the event of circuit overload or fault.(c) Thermal/acoustic materials in the fuselage, if installed, must not be a flame propagation hazard.(d) Sources of heat within each baggage and cargo compartment that are capable of igniting adjacent objects must be shielded and insulated to prevent such ignition.(e) For level 4 airplanes, each baggage and cargo compartment must-(1) Be located where a fire would be visible to the pilots, or equipped with a fire detection system and warning system; and(2) Be accessible for the manual extinguishing of a fire, have a built-in fire extinguishing system, or be constructed and sealed to contain any fire within the compartment.(f) There must be a means to extinguish any fire in the cabin such that-(1) The pilot, while seated, can easily access the fire extinguishing means; and(2) For levels 3 and 4 airplanes, passengers have a fire extinguishing means available within the passenger compartment.(g) Each area where flammable fluids or vapors might escape by leakage of a fluid system must-(2) Have a means to minimize the probability of fluid and vapor ignition, and the resultant hazard, if ignition occurs.(h) Combustion heater installations must be protected from uncontained fire.