Where are smoke detectors typically used in an aircraft?

Smoke detectors are primarily installed in cargo and baggage compartments of an aircraft because these areas are particularly vulnerable to fire risks. The cargo compartments often contain a mix of goods that can include flammable materials, and the detectors in these areas are designed to identify smoke quickly to alert the crew of potential fire hazards. This early detection is crucial, especially considering that crew members may not regularly monitor these areas.

While smoke detectors can also be present in other parts of the aircraft, such as the flight deck, passenger cabins, and galley areas, the cargo compartment is specifically designed to help protect against threats that may not be easily visible or detectable by the crew during flight. Thus, equipping cargo and baggage compartments with smoke detectors ensures that any fire is detected promptly, allowing for timely response and action by the flight crew to mitigate danger.