How many fire detectors are mounted in each engine compartment to indicate an external engine fire?

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Multiple Choice

How many fire detectors are mounted in each engine compartment to indicate an external engine fire?

Explanation:
In engine fire detection, you want multiple independent sensing points around the engine compartment to ensure quick and reliable indication of an external fire. Three detectors are used per engine compartment so that heat from a fire in different zones—near the front, mid-section, and rear/cowling area—can be detected even if one sensor is fouled or fails. This arrangement provides redundancy and broad coverage, improving the chances of an early warning and reducing the likelihood of a missed fire. Fewer detectors would risk missing a hotspot, while more would add unnecessary cost and potential for false alarms.

In engine fire detection, you want multiple independent sensing points around the engine compartment to ensure quick and reliable indication of an external fire. Three detectors are used per engine compartment so that heat from a fire in different zones—near the front, mid-section, and rear/cowling area—can be detected even if one sensor is fouled or fails. This arrangement provides redundancy and broad coverage, improving the chances of an early warning and reducing the likelihood of a missed fire. Fewer detectors would risk missing a hotspot, while more would add unnecessary cost and potential for false alarms.

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