What is the normal position of the EMER EXT LT switch during flight operations?

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During flight operations, the EMER EXT LT switch is normally positioned in the "ARM" setting. This allows the emergency exterior lights to be automatically activated in the event of an emergency, ensuring visibility of the aircraft from the outside during critical situations, such as an evacuation or when the aircraft is on the ground after a landing incident. When the switch is in the ARM position, the emergency exterior lights are generally off during normal operations, but they are ready to illuminate automatically if needed.

The other options do not fit the operational requirements for the EMER EXT LT switch during regular flight. The OFF position would deactivate the emergency lights entirely, which is not suitable for flight safety. The AUTO position is not applicable because the switch does not have an automatic function separate from its ARMed state. The MANUAL setting would require the crew to activate the lights manually, which is not the standard practice since automatic activation is preferred.

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