What does a "negative C" symbol next to the circling minimums on a Jeppesen approach chart indicate?

The "negative C" symbol next to the circling minimums on a Jeppesen approach chart indicates an expanded circling area for obstacle protection. This symbol signifies that pilots should be particularly aware of the surrounding terrain and obstacles in the vicinity during the circling maneuver. An expanded circling area means that there is a need for additional lateral distance between the aircraft's flight path and any obstacles, ensuring that the aircraft remains safely clear while maneuvering after the approach. This is particularly important for maintaining safety during the critical phase of flight when transitioning from the approach to landing.

The presence of this symbol is a warning to pilots that the standard circling area might not provide sufficient clearance due to nearby obstacles, thus requiring a broader operational space during the circling maneuver. Pilots are expected to adjust their flight paths accordingly to adhere to these safety recommendations.