What is the recommended circuit height if a special procedure NOTAM indicates the circuit height is 1,500 feet ASL and the ceiling is 1,000 feet overcast?

The recommended circuit height in this scenario is based on adhering to visual flight rules and ensuring safe operations within the prescribed airspace. When the special procedure NOTAM indicates a circuit height of 1,500 feet above sea level (ASL), it's essential to consider the cloud base as well. In this case, the ceiling is at 1,000 feet overcast, which means any circuit operations conducted must ensure that the aircraft remains clear of the clouds for visual operations.

By recommending a circuit height of 500 feet below the cloud base, it aligns with the need to maintain safe separation from clouds while accommodating the required circuit height. This allows pilots to stay within visual meteorological conditions, avoiding any breach of regulations related to cloud clearance. In this instance, it ensures that the aircraft is operating safely and legally by remaining visible and avoiding the risk of entering the overcast cloud base, which is crucial for maintaining situational awareness and minimizing the risks associated with reduced visibility.