In which situation would you need to manually turn off emergency lights?

The situation where you would need to manually turn off emergency lights is when the emergency lights remain illuminated after the aircraft's power has been turned off. In this case, if the emergency lights do not extinguish as expected, manual intervention is necessary to ensure that the lights are deactivated. This is crucial to prevent any unnecessary distractions or confusion during emergency procedures and to confirm that all systems are functioning as intended. Maintaining control over the emergency lights contributes to safe operation and management of emergency protocols onboard the aircraft.

In contrast, other situations like an aircraft being operational or when power is restored would not typically require manual deactivation because the emergency lights are designed to function based on the operational state of the aircraft. If the flight crew deems it necessary, it's usually more about assessing circumstances rather than a standard procedure for turning off the lights.