Not susceptible to burning violently when ignited. Confusing
fire proof, fire resistant, flame resistant, flammable and flash
resistant can be hazardous.
"...incapable of continued safe flight in tropical environments
in which clouds contained high liquid water content..."
Source: One of the accusations levied against
the Pratt & Whitney-engined Boeing 737-200 that went down on
August 23, 2005, in a lawsuit filed by seven survivors of the TANS
Peru airliner crash.