If fire is not confirmed during flight, what should be done next?

In a situation where fire is not confirmed during flight, the most appropriate next step is to execute a precautionary emergency landing (PEL). This option is chosen because it ensures that the crew is taking proactive measures to manage the potential risk. Even without visual confirmation of fire, the situation may still necessitate immediate action to protect the safety of the aircraft and its occupants.

Executing a PEL allows the flight crew to descend and land at the nearest available airport while remaining vigilant for any indications of fire or other emergencies. This approach prioritizes safety and situational awareness, enabling the crew to assess the situation more accurately while preparing for a controlled landing.

Continuing normal operations could expose the flight and passengers to an escalating risk if a fire is indeed present but not detected. Alerting air traffic control is essential in emergency situations, but it does not directly address the immediate safety actions required due to the potential fire hazard. Similarly, performing emergency landing procedures might imply that there already is a confirmed emergency, which is not the case when fire is not confirmed. Therefore, the best course of action is to execute a PEL, allowing the crew to act decisively while assessing ongoing conditions.