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Instrument Flying Handbook, Instrument Landing System.
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Guidance is provided through a ground based system that consists of several components.With a background in system function, pilots then perform an instrument landing procedure as published or via radar vectors.The system is not foolproof, however, and so pilots must be aware of the factors which can cause course distortion to ensure they are receiving reliable signals.These approaches all come with their unique set of minimums to provide a margin for error and safety buffer to compensate for potential limitations and malfunctions.Other approaches use the same equipment but are similar to localizers, such as Localizer Type Directional Aid Approaches and Simplified Directional Facility Approaches.Finally, to aid the transition, visual information is provided through the use of airport lighting.Distance Measuring Equipment, which is simplified via frequency pairing.Landing information is then supplemented with range information through:.The glide-slope, providing vertical guidance.The localizer, providing horizontal guidance, and.
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