If the approach requires a GPS NAVAID and forecast conditions forecast a ceiling of 2,000 feet and visibility of 4 miles, what must the pilot do?

When an approach requires a GPS NAVAID, it is essential to consider whether the weather conditions meet the necessary requirements for the approach. The forecasted ceiling of 2,000 feet and visibility of 4 miles may not be adequate for some GPS approaches, particularly those that have specific visibility and ceiling minimums. In this case, the forecast does not prohibit the approach, but it does require the pilot to have a plan in case those conditions deteriorate or are not met upon arrival.

Designating an alternate airport is a critical action that provides a backup plan for the flight. It ensures that if the weather at the destination is not suitable for landing upon arrival or if conditions worsen, the pilot has a predetermined alternate option where they can safely divert. This is a best practice in aviation, particularly when weather conditions are marginal.

While other options might seem viable, they do not prioritally align with safety protocols and regulations concerning weather minimums and approaches. For instance, continuing to the destination under VFR without considering the forecast and potential for worsening conditions could put the pilot and passengers at risk. Canceling the flight plan eliminates the option to land at the intended airport, and flying to an alternate airport using visual navigation might not be feasible if visual references are