Aviation Mechanic - General, Airframe, and Powerplant › III. Powerplant › Task E. Engine Fire Protection Systems

AM.III.E.R2

Risk management

Extinguishing agents.

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Get a short, cited explanation of this element written from the FAA handbooks: the core idea, the numbers that matter, common test traps, and a quick self-check.

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Aviation Maintenance Technician Handbook - Powerplant p. 9-7
Chapter 9: Engine Fire Protection Systems › Engine Fire Extinguishing System › Fire Extinguishing Agents
Fire Extinguishing Agents The fixed fire extinguisher systems used in most engine fire protection systems are designed to dilute the atmosphere with an inert agent that does not support combustion. Many systems use perforated tubing or discharge nozzles to distribute ... extinguishing agent. High rate of discharge (HRD) systems use open-end tubes to deliver a quantity of extinguishing agent in 1 to 2 seconds. The most common extinguishing agent still used today is Halon 1301 because of its effective firefighting…
Aviation Maintenance Technician Handbook - Airframe p. 17-9
Chapter 17: Fire Protection Systems › Extinguishing Agents & Portable Fire Extinguishers › Halogenated Hydrocarbons
Extinguishing Agents & Portable Fire Extinguishers There must be at least one hand held, portable fire extinguisher for use in the pilot compartment that is located within easy access of the pilot while seated. There must be at least one hand ... Figure 17-10. Halogenated Hydrocarbons For over 45 years, halogenated hydrocarbons (Halons) have been practically the only fire extinguishing agents used in civil transport aircraft. However, Halon is an ozone depleting and global warming chemical, and its production has been…
Aviation Maintenance Technician Handbook - Airframe p. 17-10
Chapter 17: Fire Protection Systems › Extinguishing Agents & Portable Fire Extinguishers › Inert Cold Gases
ability to replace air above burning surfaces and maintain a smothering atmosphere. CO2 is effective as an extinguishing agent primarily because it dilutes the air and reduces the oxygen content so that combustion is no longer supported. Under certain conditions ... allowed to breathe CO2 in fire extinguishing concentrations for 20 to 30 minutes. CO2 is not effective as an extinguishing agent on fires involving chemicals containing their own oxygen supply, such as cellulose nitrate (used in some aircraft paints). Also…