This specification covers the following types and classes of extinguishers: Type I Stored pressure type Category A - Operational Temperature range -40 to +140 ??(-40 to +60 ?? Category B - Operational Temperature range +35 to +140 ??(+1.7 to +60 ?? Type II Cartridge operated type Category A - Operational Temperature range -40 to +140 ??(-40 to +60 ?? Category B - Operational Temperature range +35 to +140 ??(+1.7 to +60 ?? Purpose The purpose of this AS is to specify minimum requirements for a water solution type hand fire extinguisher that shall be suitable for use on incipient fires which may occur in an airplane cabin interior. The type of fire for which these units are intended is one involving solid combustible materials such as paper@ textiles and similar materials. The goal of this standard is to provide fire extinguishers that have the physical attributes necessary to assure the airworthiness necessary for installation on aircraft type certificated under FAA/EASA regulations (14CFR/CS part 23@ 25@ 27@ or 29@ as applicable).