Certified Flight Instructor (CFI) Practice Exam

In a METAR report, "FU" signifies smoke. This abbreviation is used in aviation weather reports to indicate the presence of smoke in the atmosphere, which can significantly affect visibility and flight operations. When pilots receive METAR reports with "FU," it's essential for them to understand that visibility may be impaired due to smoke, which could be caused by forest fires, industrial activities, or other sources. The context of this abbreviation within METARs is crucial for flight safety and planning. Recognizing potential hazards associated with smoke can help pilots make informed decisions regarding takeoff, landing, and flight routing, particularly in areas where smoke may be prevalent. Understanding these meteorological abbreviations is an important part of being a Certified Flight Instructor and enhances a pilot's ability to interpret weather information accurately.