§25.1197 Fire extinguishing agents.

(a) Fire extinguishing agents must-- (1) Be capable of extinguishing flame emanating from any burning of fluids or other combustible materials in the area protected by the fire extinguishing system; and (2) Have thermal stability over the temperature range likely to be experienced in the compartment in which they are stored. (b) If [any] toxic extinguishing agent is used, provisions must be made to prevent harmful concentrations of fluid of fluid vapors (from leakage during normal operation of the airplane or as a result of discharging the fire extinguisher on the ground or in flight) from entering any personnel compartment, even though a defect may exist in the extinguishing system. This must be shown by test except for built-in carbon dioxide fuselage compartment fire extinguishing systems for which-- (1) Five pounds or less of carbon dioxide will be discharged, under established fire control procedures, into any fuselage compartment; or (2) There is protective breathing equipment for each flight crewmember on flight deck duty. [(c) [Deleted]]