In what conditions might a go-around be necessary?

A go-around is a crucial maneuver that pilots may need to perform when landing conditions are not favorable or safe as the aircraft approaches the runway. This could occur due to a variety of factors, such as poor visibility, an unstable approach, or obstructions on the runway. By executing a go-around, the pilot prioritizes safety and gives themselves another opportunity to make a safe landing under more favorable conditions. This decision reflects sound judgement and adherence to safety protocols in aviation.

The other conditions listed do not necessitate a go-around. For instance, reaching cruising altitude is unrelated to landing procedures and does not imply any need for a go-around. Similarly, completing all checklist items signifies that the aircraft is prepared for the next phase, but it does not inherently relate to the landing conditions. Lastly, a pilot feeling they need more practice is a subjective assessment that should not influence the decision to execute a go-around; instead, ensuring safety during landing is what drives the necessity for such an action.