Which scenario would not require using an alternate airport?

Using an alternate airport is often a critical component of flight planning and operations, particularly in terms of ensuring safety and readiness for unexpected contingencies. The scenario where good weather conditions are forecasted is one where the need for an alternate airport is typically reduced or may not be necessary.

When the weather conditions are favorable — indicating clear skies, good visibility, and suitable winds — the likelihood of complications that could necessitate diverting to an alternate airport decreases. In such cases, the pilot can be fairly confident in the ability to complete the flight as planned.

In contrast, having restrictions such as crosswinds that exceed safe limits, the absence of approved compatible approaches, or not having reliable navigation aids would all indicate a higher likelihood of needing an alternate. These situations would compromise the safety of landing at the intended airport, thus emphasizing the need for a fallback location.