If visibility falls to 1500' outside of the FAF, what must you do?

When visibility falls to 1500 feet outside of the Final Approach Fix (FAF), the appropriate action is to execute a missed approach. This decision is grounded in the regulations for instrument flying, where specific minimum visibility requirements must be adhered to in order to safely continue an approach.

The missed approach procedure is designed to provide pilots with a structured way to handle situations where the conditions no longer allow for a safe landing. In this scenario, because the visibility is below the necessary threshold required for continuing the approach, the pilot must initiate the missed approach procedure to ensure safety and compliance with flight regulations.

A missed approach typically involves climbing away from the airport and following a designated procedure to either re-attempt the approach or navigate to an alternate airport, thus ensuring that the pilot maintains control of the aircraft and makes safety a priority.