Certified Flight Instructor (CFI) Practice Exam

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Study for the Certified Flight Instructor Exam with flashcards and multiple choice questions, complete with hints and detailed explanations. Prepare thoroughly for your upcoming exam!

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What is indicated by the letter "U" in METAR?

Unknown
Unusual
Universal
Upper Level

The correct answer is: Unknown

The letter "U" in METAR reports signifies "Unknown." In METAR aviation weather reports, this code is used to indicate that certain weather data, such as wind direction or temperature, may be unavailable or not reliably reported. This helps pilots understand potential uncertainties in the weather information they are receiving, allowing them to make informed decisions regarding flight operations. The other choices, while appealing, do not accurately capture the specific meaning of "U" in METAR. For instance, "Unusual" and "Universal" suggest qualities or generalities that do not align with the strict terminology used in aviation weather reporting. "Upper Level" may relate to different flight levels or atmospheric data but does not connect to the indicated letter in METAR reports. Understanding these distinctions is essential for accurate interpretation of METAR, which plays a crucial role in flight safety and planning.