How many fire detectors are in the aft cargo compartment?

How many fire detectors are in the aft cargo compartment?

• A. 1
• B. 2
• C. 3
• D. 4

Answer: (B)

Two detectors monitor the aft cargo compartment. This setup provides reliable coverage across the entire hold and adds redundancy so a fire is detected quickly even if one sensor is obscured or temporarily faults. The detectors feed the cargo fire detection panel, triggering alarms and coordinating with the fire suppression system. Relying on a single detector could leave a portion of the hold unchecked, while more detectors aren’t necessary for this aircraft’s configuration, making two the correct count.

Two detectors monitor the aft cargo compartment. This setup provides reliable coverage across the entire hold and adds redundancy so a fire is detected quickly even if one sensor is obscured or temporarily faults. The detectors feed the cargo fire detection panel, triggering alarms and coordinating with the fire suppression system. Relying on a single detector could leave a portion of the hold unchecked, while more detectors aren’t necessary for this aircraft’s configuration, making two the correct count.