Which of the following is NOT an action for in-flight fires?

In-flight fires pose significant threats to aircraft safety, and the appropriate emergency actions are crucial for managing such incidents effectively. Using onboard fire extinguishers to attempt to extinguish a fire is, in fact, a standard procedure and a critical action in responding to in-flight fire situations. Fire extinguishers are specifically designed for use in an aircraft environment, catering to the types of fires that could arise onboard.

On the other hand, evacuating non-essential personnel, using smoke detectors, and performing an emergency landing are all actions that could be taken in certain scenarios during an in-flight fire, but they involve different aspects of emergency management. Non-essential personnel evacuation might not always be feasible and may not be prioritized during the chaos of an in-flight fire. Smoke detectors are vital tools in identifying the presence of smoke but do not provide direct action for extinguishing the fire; instead, they serve more for early warning. An emergency landing might be necessary depending on the severity of the fire and prevailing circumstances, but this is not typically a decisive action taken exclusively for managing the fire itself.

Therefore, while A is recognized as an essential action in extinguishing in-flight fires, the correct response to the question of which action does not pertain directly to managing in-flight