scope:

Identification. This document establishes the requirements and verification methods for an HFC-227ea/SBCS Hand-held Fire Extinguisher (HHFE) with Bracket. For simplicity, the term 'HHFE system' will be used to describe a fully-charged HFC-227ea/SBCS HHFE assembly and its mounting bracket. The term 'HHFE' will most often describe a charged or uncharged HHFE assembly without the bracket. The HHFE can consist of a Steel Pressure Cylinder or an Aluminum Pressure Cylinder (paragraph 3.3.1).

System Overview. The HFC-227ea/SBCS HHFE system is comprised of the following items: a non-refillable, one-time usage HHFE (see paragraph 3.4.2); the fire extinguishing agent (paragraph 3.2.2); the pressurization gas (paragraph 3.2.4); and the point-of-use mounting bracket (paragraph 3.4.4). The fire extinguishing agent HFC-227ea/SBCS is comprised of 1, 1, 1, 2, 3, 3, 3-Heptafluoropropane agent (generically named HFC-227ea) having specialized sodium bicarbonate (SBCS) powder in suspension. The purpose of this HHFE system is to provide Army Aviation weapon systems with an acceptable HHFE that does not employ an extinguishing agent classified as an ozone-depleting substance (ODS).