When may a pilot make a straight-in landing using an IAP with only circling minimums?

A pilot may make a straight-in landing using an Instrument Approach Procedure (IAP) with only circling minimums when cleared to land and the runway is in sight. This is because circling approach minimums are designed for situations where a straight-in landing is not authorized; however, if a pilot has visual contact with the runway while being officially cleared to land, they are permitted to execute a straight-in landing despite the approach specifically having circling minimums.

If a pilot is able to clearly see the runway and is cleared for landing, they can safely proceed with the landing, ensuring that they are in compliance with the approach's visibility and descent requirements. This emphasizes the importance of situational awareness and communication with air traffic control before making such decisions. The requirement of being cleared to land assures that the approach is coordinated with air traffic operations, ensuring safety in the airspace.