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What are the characteristics of the Instrument Landing System (ILS) - Glide Slope? What is the frequency, width, range, slope, and errors associated with it?

User Talat
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Final answer:

The ILS Glide Slope operates within the 329.3 to 335 MHz frequency range, with a width of approximately 1.4 degrees and a standard slope of 3 degrees. Its range can reach up to 10 nautical miles, but is subject to variations due to environmental factors and potential errors.

Step-by-step explanation:

The Instrument Landing System (ILS) Glide Slope is a critical component of the ILS, which guides aircraft during the final approach for landing. The frequency of ILS Glide Slope transmissions typically ranges from 329.3 to 335 MHz. Its width is approximately 1.4 degrees, ensuring the signal covers the necessary airspace without being too broad.

The range at which the Glide Slope can be received is up to 10 nautical miles for Category I ILS approaches, although this can vary depending on the equipment and surrounding terrain. The standard slope of the Glide Slope signal is 3 degrees, providing a gentle descent path for landing aircraft. However, it can vary between 2.5 to 3.5 degrees depending on the airport and surrounding environment.

There are several errors that can affect the Glide Slope signal, including reflections from nearby structures (multipath errors), terrain interference, and equipment malfunctions. Pilots are trained to identify such discrepancies and take necessary action.

User Mornaner
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