What does being cleared for an S-LOC 18 approach from over HUSKR indicate?

Being cleared for an S-LOC 18 approach from over HUSKR indicates that you should begin your final approach without the need for a procedure turn. This means that the approach procedure allows you to directly transition to the final approach segment after reaching the specified waypoint (in this case, HUSKR).

In the context of instrument approaches, a procedure turn is often used to establish a proper alignment with the final approach course, especially when transitioning from the en route phase to the landing phase. However, being cleared for this specific approach means that the air traffic control (ATC) expects you to enter the final approach segment directly, streamlining your descent without the additional maneuvering that a procedure turn would involve. This can enhance efficiency in the terminal airspace and ensures that the aircraft is positioned correctly for landing.

In summary, the designation of "cleared for an S-LOC 18 approach" from HUSKR means the approach can be conducted straight into the final approach, thus not requiring a procedure turn.