Instrument Meteorological Conditions Turbulence Visual Meteorological Conditions (VMC) 
Professional Pilot
JANUARY 2, 2025
Additional operational modes include instrument meteorological conditions (IMC) navigation guidance, primary mode for all flight phases, and visual meteorological conditions (VMC) mode for visual glideslope display to the runway touchdown point, which is ideal for night approaches.
Pilot Institute
MARCH 6, 2025
AIRMETS – Airmans Meteorological Information An AIRMETS is a weather advisory that warns pilots about moderately hazardous conditions like turbulence, icing, and limited visibility. These conditions can affect the performance of smaller or less equipped aircraft. A SIGMET is usually valid for four hours.
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