Instrumental Landing System - Middle Markers

Middle markers are an essential component of the Instrumental Landing System (ILS) used in aviation to assist pilots during the final approach and landing phase of a flight. They provide accurate guidance to the pilots by indicating the aircraft's position relative to the runway. Let's understand the location of middle markers in detail.

Location of Middle Markers

The middle markers are located approximately 1 km ahead of the runway threshold. They are placed on the extended centerline of the runway, which is an imaginary line that extends from the center of the runway to infinity in both directions. The location of middle markers is critical for pilots as they indicate the point where the aircraft should be at a specific altitude and speed.

Function of Middle Markers

The primary function of middle markers is to provide vertical guidance to pilots during the landing process. When the aircraft passes over the middle marker, it should be at a particular altitude and speed to ensure a safe landing. If the aircraft is too high or too low, the pilot will receive an audio signal in the cockpit warning them to adjust their altitude accordingly.

Importance of Middle Markers

Middle markers are essential for pilots because they help them to maintain the correct altitude and speed during landing. They also provide an additional layer of safety by warning pilots if they are deviating from the correct approach path. This information is particularly crucial during adverse weather conditions when visibility is poor.

Conclusion

In conclusion, middle markers are located approximately 1 km ahead of the runway threshold on the extended centerline of the runway. They provide vertical guidance to pilots during landing and are essential for maintaining a safe approach path. The correct use of middle markers is critical for pilots to ensure a safe landing, particularly in adverse weather conditions.