Which of the following is not a condition for executing a missed approach?

The condition that is not a requirement for executing a missed approach is the presence of adverse weather conditions. While adverse weather can certainly contribute to a decision to go missed, it is not a defining condition that must be met.

The act of executing a missed approach is primarily based on whether the aircraft can safely land, which involves visual contact with the runway environment and the ability to safely land according to the aircraft's operational guidelines and regulations. If the runway environment is not visible or if there is an inability to land safely, the pilot must execute a missed approach procedure. Additionally, ATC may direct a missed approach for various operational reasons, irrespective of the weather conditions at the time.

In summary, while adverse weather can affect landing capability, it is not a direct condition that necessitates a missed approach, distinguishing it from the other choices that clearly represent situations requiring such an action.