Dangerous goods may be carried in the main deck cargo compartment of a passenger aircraft as long as it meets the _____ ____ ___ ____ ____ certification requirements of aircraft cargo compartments.

• A. Class B or Class C
• B. Class A or Class B
• C. Class C only
• D. Class A or Class C

Answer: (A)

The ability to carry dangerous goods on the main deck of a passenger aircraft depends on the cargo compartment meeting a specific level of certification that ensures adequate fire safety, containment, and detection. Only when the main deck cargo compartment is certified to Class B or Class C requirements is it permitted to load dangerous goods there, because these certifications specify the necessary fire-resistant construction and safety features to protect the aircraft and occupants in the event of a DG incident. Class A certification does not provide the same level of protection for main deck loading in passenger aircraft, so it is not sufficient for this purpose. In short, meeting Class B or Class C certification ensures the main deck cargo compartment can safely contain and manage potential dangerous goods during flight.