When is the Green Dot utilized for emergency approaches?

The Green Dot is utilized during emergency approaches primarily for engine failure scenarios as it indicates the best glide speed for the aircraft when one engine is inoperative. This speed is crucial because it helps the pilot maintain optimal flying conditions and control of the aircraft in a critical situation. The Green Dot serves as a reference point for the minimum speed that ensures safety and performance during the descent when dealing with an engine failure, allowing for effective management of the aircraft's energy state.

In other contexts, such as visual approaches or normal flap configurations, the Green Dot may not provide the same critical reference as it does during an emergency engine failure. For instance, while it might be useful in a general approach, the specific need for optimal glide performance in an engine-out scenario emphasizes the importance of using the Green Dot in that context specifically. Thus, in emergency engine failure situations, the Green Dot plays a vital role in ensuring the aircraft is flown safely and effectively towards a safe landing.