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Expected Further Clearance (EFC) is the expected time that a pilot can anticipate receiving clearance to fly beyond a predetermined clearance limit. EFC enables pilots to plan ahead for their upcoming clearance and make potential route adjustments to account for weather conditions or other unforeseen circumstances. This waiting period can vary depending on the air traffic density, weather conditions, and other factors that may affect flying conditions. EFC is a critical aspect of airspace management, and pilots must follow the given time to ensure the safety of all parties involved in the flight.
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