How many agent bottles are available for fire discharge to an engine?

How many agent bottles are available for fire discharge to an engine?

• A. One for each engine
• B. Two for each engine
• C. Four total
• D. No bottles for engine fires

Answer: (B)

Engine fire protection on the A320 uses two extinguishing agent bottles for each engine. This redundancy ensures there is enough agent to suppress a serious engine fire and provides a backup if one bottle cannot deliver all the required mass. When a fire is detected or the ENG FIRE push is activated, both bottles in that engine’s system can discharge into the engine fire zone, delivering the extinguishing agent from two separate sources. Because the question asks per engine, the correct idea is that two bottles are available for each engine, rather than one per engine or a fixed total for the whole aircraft. The notion of four total would only apply if you’re counting across both engines, but per engine the setup is two bottles.

Engine fire protection on the A320 uses two extinguishing agent bottles for each engine. This redundancy ensures there is enough agent to suppress a serious engine fire and provides a backup if one bottle cannot deliver all the required mass. When a fire is detected or the ENG FIRE push is activated, both bottles in that engine’s system can discharge into the engine fire zone, delivering the extinguishing agent from two separate sources. Because the question asks per engine, the correct idea is that two bottles are available for each engine, rather than one per engine or a fixed total for the whole aircraft. The notion of four total would only apply if you’re counting across both engines, but per engine the setup is two bottles.