Remove Altimeter Remove Turbulence Remove Wind Shear
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What Is a SPECI and When Is It Issued?

Pilot Institute

Expect poor visibility, increased turbulence, and slippery runway surfaces. Thunderstorms can also bring wind shear and lightning. Altimeter Setting The altimeter setting gives you pressure information in inches of mercury or hectopascals. A2992 : Altimeter setting of 29.92 inHg would be coded as A2992.

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How to Brief an Instrument Approach (Step-by-Step)

Pilot Institute

Set your altimeter bug accordingly. You may also include significant weather conditions, wind shear, or excessive turbulence. If your aircraft has a secondary communication radio, set it to the ground frequency. 4) Set Approach Minimums Look for the approach minimum altitudes in the lower half of the plate.