Certified Flight Instructor (CFI) Practice Exam

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What does the abbreviation "PR" refer to in METAR?

Partial
Precipitation
Pressure
Patches

The correct answer is: Partial

The abbreviation "PR" in METAR stands for "Precipitation." METAR reports are an essential source of weather information for pilots and aviation personnel, providing data on various atmospheric conditions. Specifically, "PR" indicates the presence of precipitation in the observed weather conditions. It is crucial to understand that "PR" does not refer to "Partial" or any of the other options. While "Partial" is a general term, it does not have an established meaning in the context of METAR reports. The term "Pressure" typically would be abbreviated differently, such as "PRES" for pressure settings, while "Patches" is not a commonly used term in METAR syntax. Therefore, recognizing "PR" specifically as an indication of precipitation helps pilots and meteorologists accurately interpret weather conditions, which is vital for operational safety and decision-making in aviation.