What action should be taken when a positive rate of climb is established during a go-around?

When a positive rate of climb is established during a go-around, retracting the landing gear is the appropriate action to take. This is essential as it helps to enhance performance and efficiency during the climb phase. The landing gear creates drag, which can hinder climb performance if left extended. By retracting the landing gear, the aircraft reduces drag, allowing for a smoother ascent and helping to accelerate to the desired climb speed.

Moreover, managing the configuration of the aircraft during a go-around is critical for ensuring safety and performance. Once the aircraft has confirmed a positive rate of climb, retracting the landing gear is a standard part of the procedure to transition from the landing to a climb phase effectively. This step is part of a systematic approach to gaining altitude safely while minimizing any adverse effects on climb performance.