How should fire extinguishers be positioned on an aircraft?

Fire extinguishers must be positioned in secured locations throughout the cabin and cockpit to ensure quick and easy access in case of a fire emergency. This strategic placement ensures that both crew members and passengers can promptly reach a fire extinguisher from various parts of the aircraft, maximizing safety.

Positioning extinguishers only in the galley or cockpit would limit accessibility during a fire that might occur elsewhere in the cabin, which is crucial because emergencies can arise in different areas. Unlike the other listed options, securing extinguishers in common areas guarantees that personnel are equipped to respond to fire incidents quickly, thereby increasing the overall safety of the flight. This approach aligns with safety regulations and best practices in aviation, which emphasize preparedness and responsiveness to emergencies.