Which flap setting corresponds to Flaps 5 during landing?

The correct answer is that Flaps 5 corresponds to a flap setting of 4/FULL during landing. In the context of the Embraer Regional Jet (ERJ), the flap settings are designed to enhance lift and improve the aircraft's slow-speed handling characteristics during the approach and landing phases.

Flaps increase the lift-to-drag ratio, allowing for a steeper angle of descent and a lower landing speed. The designation of Flap 5 refers to a specific position within the flap setting range that optimizes these characteristics at a critical point in the landing procedure.

When configured to 4/FULL, the flaps achieve a setting that allows the aircraft to maintain stable flight characteristics while decelerating and descending toward the runway. This specific setting is chosen to provide the necessary lift while managing drag effectively, making it suitable for a safe and controlled landing.

Utilizing the other flap settings would not provide the same aerodynamic benefits. For example, settings like 1/2 or 2/4 might not deliver adequate lift or could lead to handling discrepancies during approach. Thus, 4/FULL is the appropriate choice corresponding to Flaps 5 during landing, facilitating a smoother and more efficient landing process.