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En Route Low-Altitude Charts:
These charts are designed for pilots who require visual assistance for their Instrument Flight Rules (IFR) navigation during flights under 18,000 feet from the mean sea level (MSL). These charts contain vital information such as minimum safe altitudes, radio frequencies, and topographical features that are essential for low altitude air navigation. They are used by pilots to navigate to their destination safely and efficiently while avoiding obstacles and other aircraft. En Route Low-Altitude Charts are updated frequently and are an essential tool for safe and efficient low altitude IFR navigation.
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