In landing minima chart, what does the "S" before an approach type represent?

In a landing minima chart, the presence of "S" before an approach type signifies "Straight-in approach." This designation indicates that the flight may conduct a straight-in approach to the runway without any significant maneuvering prior to landing. Straight-in approaches are typically simpler and more straightforward, allowing pilots to align directly with the runway approach path from a distance.

This clarity in approach designation is crucial for pilots while planning their descent and aligning with the runway, ensuring that they are aware of the flight path and can prepare for landing accordingly. Other approach types may require different procedures or maneuvers that could complicate the approach, making the straight-in approach a preferred choice in many situations for its simplicity and directness.