Certified Flight Instructor (CFI) Practice Exam

What does "FZ" indicate in a METAR report?

1. Freezing

2. Haze

3. Low drifting

4. Dust Storm

The correct answer is: Freezing

In a METAR report, "FZ" indicates freezing conditions. Specifically, it refers to freezing precipitation, which can affect operational considerations for pilots. The "FZ" prefix is used in conjunction with various weather phenomena to denote that the temperatures are at or below the freezing point, prompting pilots to apply caution during flight operations due to the potential presence of ice on surfaces, such as wings and runways, which can have significant implications for aircraft performance and safety. The distinction of "FZ" is crucial in understanding weather impacts on aviation. For instance, freezing rain can lead to ice accumulation that poses hazards during takeoff and landing. Recognizing this indicator in reports allows pilots to prepare adequately for potentially dangerous conditions. Other indicators, like haze, low drifting, and dust storms have their own distinct codes and do not imply freezing conditions. Understanding these terms helps pilots maintain situational awareness regarding weather phenomena that could influence their flying environment.