During flight planning, what must be considered regarding alternate airports?

Alternate airports are an essential aspect of flight planning as they provide backup options in the event that the primary destination airport becomes unusable. This could occur due to various reasons such as poor weather conditions, runway closures, or other emergencies preventing a safe landing. The requirement for alternate airports is not contingent on weather conditions; they must be considered regardless of whether the weather is good or bad.

When planning a flight, pilots must assess the availability and suitability of alternate airports to ensure they can land safely should unforeseen circumstances arise at the intended destination. This enhances safety and operational flexibility during flight, highlighting the critical role of alternate airports in comprehensive flight planning.

Other options may suggest limitations or misconceptions about when and why alternate airports are necessary, which misrepresent their importance in ensuring safe operations.