What is the minimum speed to be maintained at KCBM until on final approach?

The correct answer indicates that the minimum speed to be maintained at KCBM until on final approach is 200 knots indicated airspeed (KIAS). This speed is typically set to ensure adequate control and handling characteristics of the aircraft as it approaches the runway. Maintaining a speed of 200 KIAS provides a safety buffer that allows pilots to manage the aircraft's configuration and respond effectively to any changes in flight conditions, ensuring a stable approach.

At higher speed thresholds like 250 KIAS, which is often associated with operational limitations for certain airspace, the aircraft may not be able to perform necessary adjustments in the final approach phase efficiently. Lower speeds like 100 KIAS or 150 KIAS might not provide sufficient margin above stall speeds or could lead to difficulties in maintaining control when transitioning to landing configurations.

Thus, 200 KIAS is considered a balanced and effective approach speed, ensuring safety while allowing for effective maneuverability in the final approach phase.