§29.1197 Fire extinguishing agents

(a) Fire extinguishing agents must: (1) Be capable of ext inguishing fl ames emanating from any burni ng of fl uids or other combustible materials in the area protected by the fire extinguishing system; and (2) Have th ermal stab ility o ver th e temperature range likely to be experienced in the compartment in which they are stored. (b) If any toxic extinguishing agent is used, it must be shown by t est t hat entry of harmful concentrations of fl uid or fl uid vapours into any personnel com partment (due t o leakage during normal operation of the rotorcraft, or discharge on the ground or i n flight) is prevented, even though a defect may exist in the extinguishing system.