The pilot shall make a gradual correction to the final bearing when it is within how many degrees of the reciprocal of the marshal radial?

The pilot is instructed to make a gradual correction to the final bearing when it is within 10 degrees of the reciprocal of the marshal radial. This requirement is crucial for maintaining the safety and accuracy of the aircraft's approach trajectory, particularly in the context of air traffic control and landing procedures.

A 10-degree threshold allows pilots to make minor adjustments without leading to abrupt changes in the aircraft's path, which could result in a loss of control or situational awareness. This gradual correction ensures that the aircraft remains stable and on course as it approaches landing or during other critical phases of flight.

Understanding this rule emphasizes the importance of precision in navigation, especially in busy airspace where coordination with air traffic control is vital. The gradual correction protocol helps maintain safe separation between aircraft and prevents conflicts that could arise from more significant, rapid adjustments in heading.