CFR › Title 14 › Part 25 › §25.120114 CFR §25.1201Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)No material in any fire extinguishing system may react chemically with any extinguishing agent so as to create a hazard.(b)Each system component in an engine compartment must be fireproof.