What is the total number of fire detectors in both the forward and aft cargo compartments?

What is the total number of fire detectors in both the forward and aft cargo compartments?

• A. 3
• B. 4
• C. 5
• D. 6

Answer: (C)

Fire detection coverage is built by counting detectors in each cargo bay and adding them together. In the CRJ-550, the forward cargo compartment has three smoke detectors to cover its larger, multi-zone area, while the aft cargo compartment has two detectors for its smaller space. Adding these gives five detectors in total across both cargo bays. This arrangement ensures reliable smoke detection and timely alerts to the crew, and, if the plane is equipped, it works with the cargo fire-suppression system for an effective response.

Fire detection coverage is built by counting detectors in each cargo bay and adding them together. In the CRJ-550, the forward cargo compartment has three smoke detectors to cover its larger, multi-zone area, while the aft cargo compartment has two detectors for its smaller space. Adding these gives five detectors in total across both cargo bays. This arrangement ensures reliable smoke detection and timely alerts to the crew, and, if the plane is equipped, it works with the cargo fire-suppression system for an effective response.