A320 Systems Practice Test 2026 - Free A320 Systems Practice Questions and Study Guide

The system protecting each engine uses two separate extinguishing bottles. So for one engine you have two bottles, and for both engines you simply add them together: 2 + 2 = four. This redundancy ensures fire suppression can still work even if one bottle isn’t available. The other options would imply fewer or more bottles than the actual per-engine setup, which isn’t how the A320 fire extinguishing system is arranged.